--------------------------------------------------------------------------- T H I S I S A D O C U M E N T I N A S C I I - F O R M A T ! ! ! --------------------------------------------------------------------------- To see the document in correct way under Windows 1. You must have installed a font with full ASCII-Character-Set (like TERMINAL) 2. Use a DOS-Editor like EDIT from original DOS-Version. EDIT filename.txt 3. Switch to DOS-Box and type in TYPE filename.txt | MORE 4. Switch to DOS-Box and print the file COPY filename.txt LPT1 TYPE filename.txt > LPT1 --------------------------------------------------------------------------- T H I S I S A D O C U M E N T I N A S C I I - F O R M A T ! ! ! --------------------------------------------------------------------------- ****************************************************************************** P C - D I S K The Harddisk Information Database DCI AG, Germany www.pc-disk.de ****************************************************************************** P R O D R I V E G E M 1 6 0 S QUANTUM NO MORE PRODUCED Native³ Translation ÄÄÄÄÄÄÅÄÄÄÄÄÂÄÄÄÄÄÂÄÄÄÄÄ Form 3.5"/SLIMLINE Cylinders ³ ³ ³ Capacity form/unform 168/ MB Heads 4³ ³ ³ Seek time í / track 19.0/ ms Sector/track ³ ³ ³ Controller SCSI1 SINGLE-ENDED Precompensation Cache/Buffer 8 KB Landing Zone Data transfer rate MB/S int Bytes/Sector 512 4.000 MB/S ext Recording method RLL 1/7 operating ³ non-operating ÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄ Supply voltage 5/12 V Temperature øC 5ö55 ³ ö Power: sleep 0.1 W Humidity % ö ³ ö standby W Altitude km ö ³ ö idle 1.9 W Shock g ³ 100 seek 3.0 W Rotation RPM 3600 read/write 3.0 W Acoustic dBA spin-up 5.0 W ECC Bit MTBF h 80000 Warranty Month 24 Lift/Lock/Park YES Certificates P C - D I S K The Harddisk Information Database DCI AG, Germany www.pc-disk.de ********************************************************************** L A Y O U T ********************************************************************** QUANTUM PRODRIVE LPS 120/240S PRODUCT MANUAL 803-20-9315 ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ JP1ÚÄÂÄÂÄÂÄÂÄÂÄ¿ Ú¿³²² ³ ÀÄÁÄÁÄÁÄÁÄÁÄÙ ³³³²² ³ ÚÄ¿ SS EP WS A2 A1 A0 ³³³²² ³ ³ ³ HDA ÀÙ³²² ³ ³ ³ Ú¿³²² SCSI ³ ÀÄÙ Terminators³³³²² J2 ³ ³³³.² ³ ÚÄ¿ ÀÙ³²² ³ ³ ³ HDA Ú¿³²² ³ ÀÄÙ ³³³²² ³ ³³³²² ³ ÀÙ³²² ³ ³²² ³ ³ ³ ³ÛÛ Power ³ ³ÛÛ J3 ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ P C - D I S K The Harddisk Information Database DCI AG, Germany www.pc-disk.de ********************************************************************** J U M P E R S ********************************************************************** QUANTUM PRODRIVE LPS 120/240S PRODUCT MANUAL 803-20-9315 Jumper Setting ============== Ü = Jumper set at factory On the Drive's PCB (Printed Circuit Board), there are six pairs of jumper pins that allow you to control drive operation. When you change a jumper setting, the new setting is in effect when the drive is next powered on. Numerous options controlled be the SCSI commands also affect the operation of the drive. Jumper Options -------------- ÚÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ Jumper ³ Setting ³ Description ³ ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ SS ³ OPEN Ü ³ Self-seek test disabled ³ ³ ³ CLOSED ³ Self-seek test enabled ³ ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ EP ³ CLOSED Ü ³ Parity checking enabled ³ ³ ³ OPEN ³ Parity checking disabled ³ ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ WS ³ OPEN Ü ³ Wait/Spin disabled ³ ³ ³ CLOSED ³ Wait/Spin enabled ³ ÃÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ´ ³ A2 ³ CLOSED Ü ³ A0, A1, and A2 are used in combination to ³ ³ A1 ³ CLOSED Ü ³ determine the drive's SCSI ID. The default³ ³ A0 ³ OPEN Ü ³ value is six. ³ ÀÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ SS Self-Seek Jumper -------------------- Quantum ships the ProDrive LPS 120/240S hard disk drive from the factory with the Self-Seek (SS) test option disabled; that is, with- out a jumper installed across the pins labeled SS. To enable the Self-Seek test, install a jumper accross the SS pins. Alternatively, the host can initiate a Self-Seek test by issuing a SEND DIAGNOSTIC command, with the self-test bit set to one. When power is applied to the drive with the Self-test enabled, the drive initiates a Self-Seek test. The SCSI-bus device identification (SCSI ID) currently selected determines the Self-Seek test performed. With the SCSI ID set to six, its default value, the drive performs random seeks, verifying the cylinder ID after every seek. The random seeks continue as long as power is applied to the drive or until the drive encounters a seek error. If the SCSI ID is set to a value other than six, the drive executes seeks in a butterfly pattern. Each butterfly seek pattern: 1. Starts at cylinder zero. 2. Seeks to the last data cylinder. 3. Performs successive seeks over a progressively narrower range of cylinders - incremeting by three at the lower limit of the range and decrementing by three at the upper limit of the range - until the drive seeks to the middle cylinder. 4. Performs successive seeks over a progressively wider range cylinder - decrementing by three at the lower limit of the range and incrementing by three at the upper limit of the range. 5. Ends with a seek to cylinder zero. Seeks in this butterfly pattern continue as long as power is applied to the drive or until the drive encounters a seek error. During the Self-Seek test, the drive can execute any command. EP Enable Parity Jumper ------------------------ At the factory, Quantum configures the ProDrive LPS 120/240S hard disk drive with parity checking enabled; that is, with a jumper installed across the pins labeled EP. To disable parity checking, remove the jumper from the EP pins. The Enable Parity (EP) option controls parity checking of data across the SCSI bus. With parity checking enabled, the drive performs parity checking. With parity checking disabled, the drive continues to generate parity information, but does not perform parity checking. WS Wait/Spin Jumper -------------------- Quantum configures the ProDrive LPS 120/240S hard disk drive with the Wait/Spin (WS) option disabled; that is, without a jumper installed across the pins labeld WS. To enable WAit/Spin option, install a jumper across the WS pins. At a power on reset, with the Wait/Spin option disabled, the motor starts to spin automatically, and the drive will become ready to perform read or write operations without the need for a start command. At a power on or reset, with the Wait/Spin option enabled, the host must send a START/STOP UNIT command to activate the drive motor. The Wait/Spin option permits power sequencing, to prevent an overload of the host's power supply due to simultaneous, peak start-up current demands from multiple devices. Once the drive receives a START/STOP UNIT command, it will become ready to perform read or write opera- tions. A2/A1/A0 SCSI-Bus Device Identification ---------------------------------------- Used in combination, the jumper settings across pins A2, A1, and A0 determine the ProDrive LPS 120/240S hard disk drive's SCSI-bus device identification (SCSI ID). By default, Quantum configures the drive with a SCSI ID of six; that is, with jumpers installed across the pins labeld A2 and A1, and no jumper installed across the pins labeled A0. ÚÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ SCSI ID ³ Jumpers ³ ³ ³ A2 ³ A1 ³ A0 ³ ÃÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄ´ ³ 0 ³ OPEN ³ OPEN ³ OPEN ³ ³ 1 ³ OPEN ³ OPEN ³ CLOSED³ ³ 2 ³ OPEN ³ CLOSED³ OPEN ³ ³ 3 ³ OPEN ³ CLOSED³ CLOSED³ ³ 4 ³ CLOSED³ OPEN ³ OPEN ³ ³ 5 ³ CLOSED³ OPEN ³ CLOSED³ ³Ü 6 ³ CLOSED³ CLOSED³ OPEN ³ ³ 7 ³ CLOSED³ CLOSED³ CLOSED³ ÀÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÙ The SCSI bus supports up to eigth devices, including the host system. A device's identification number determines its priority and must be unique in the system. Terminating Resistors --------------------- At the factory, Quantum installs three resistor networks in socket on the drive PCB (Printed Circuit Board) to terminate the SCSI bus. Only the first device - usually the host - and the last device an a SCSI bus should contain terminating resistors. When installing the ProDrive LPS 120/240S hard disk drive in any other position on the SCSI bus, remove the terminating resistors. P C - D I S K The Harddisk Information Database DCI AG, Germany www.pc-disk.de ********************************************************************** I N S T A L L ********************************************************************** QUANTUM PRODRIVE LPS 120/240S PRODUCT MANUAL 803-20-9315 Notes on Installation ===================== Installation direction ---------------------- horizontally vertically ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ÚÄÄ¿ ÚÄÄ¿ ³ ³ ³ ÃÄÄÄÄÄ¿ ÚÄÄÄÄÄ´ ³ ³ ³ ³ ³ ³ ³ ³ ³ ÚÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄ¿ ³ ³ ³ ³ ³ ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ ÃÄÄÄÄÄÙ ÀÄÄÄÄÄ´ ³ ÀÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÙ ÀÄÄÙ ÀÄÄÙ ³ ³ ³ ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ Orientation ----------- The mounting holes on the ProDrive LPS 120/240S hard disk drive allow the drive to be mounted in any orientation. For mounting, #6-32 UNC screws are recommended. CAUTION: The Printed-Circuit Board (PCB) is very close to the mount- ing holes. Do not exceed the specified length for the mounting screws. The specified screw length allows full use of the mounting- hole threads, while avoiding damaging or placing unwanted stress on the PCB. To avoid stripping the mounting-hole threads, the maximum torque applied to the screws must not exceed 8 inch-pounds. Clearance --------- Clearance from the drive - except mounting surfaces - to any other surface must be 0.10 inches minimum. Ventilation ----------- The ProDrive LPS 120/240S hard disk drive operates without a cooling fan, provided the ambient air temperature does not exceed 131øF (55øC). J3 DC Power Connector --------------------- The drive's DC power connector (J3) is a 4-pin Ranoda Electronics Connector (06300010-04-1), or equivalent, mounted on the back edge of the Printed-Circuit Board (PCB). Recommended connectors and their numbers: 4-pin connector (P3): AMP P/N 1-480424-0 or equivalent Loose-piece contacts: AMP P/N 61173-4 or equivalent Strip contacts: AMP P/N 350078-4 or equivalent pin 1 +12 VDC pin 2 +12 Volts Return (Ground) pin 3 + 5 Volts Return (Ground) pin 4 + 5 VDC Note: Labels indicate the pin numbers on the connector. Pins 2 and 3 are connected on the drive. J2 SCSI Connector ------------------ The SCSI cable connector (J2) on the ProDrive 120/240S hard disk drive is a 50-pin universal header. A key slot on the header prevents the incorrect installation of the header connector on the SCSI cable. To prevent the header connector on the SCSI cable from being plugged in backwards, use only a keyed header connector. Recommended header connectors and their part numbers: 50-pin connector (w strain relief) AMP P/N 1-746195-2 or equivalent 50-pin connector (w/o strain relief) AMP P/N 1-499508-2 or equivalent Power Sequencing ---------------- You may apply the power in any order or manner, or short or open either the power or power return line with no loss of data or damage to the disk drive. However, data may be lost in the sector being written at the time of power loss. The drive can withstand transient voltages of +10% to -100% from nominal while powering up or down. Disk Caching ------------ The ProDrive LPS 120/240S hard disk drive incorporates DisCache a 256K disk cache, to enhance drive performance. This integrated feature can significantly improve system throughput. Read and write cahcing can be enabled or disabled using the MODE SELECT command. Acoustics --------- ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄÄÄ¿ ³ Operating Mode ³ Measured Noise ³ Distance ³ ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄ´ ³ Idle On Track ³ 43 dBA (mean) ³ 12.0 in ³ ³ ³ 45 dBA (maximum)³ 12.0 in ³ ÃÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÅÄÄÄÄÄÄÄÄÄÄ´ ³ Seeking (Random)³ 50 dBA (mean) ³ 12.0 in ³ ³ ³ 53 dBA (maximum)³ 12.0 in ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÄÄÙ P C - D I S K The Harddisk Information Database DCI AG, Germany www.pc-disk.de ********************************************************************** F E A T U R E S ********************************************************************** QUANTUM PRODRIVE LPS 120/240S PRODUCT MANUAL 803-20-9315 Formatted Capacity ------------------ At the factory, the ProDrive LPS 120/240S receives a low-level format that creates the actual tracks and sectors on the drive. Reliability ----------- Mean Time Between Failures (MTBF): 70,000 Power On Hours (POH), typical usage Preventive Maintenance (PM): Not required Mean Time To Repair (MTTR): 30 minutes Start/Stop: 20,000 cycles (minimum) Error Detection and Correction ------------------------------ Quantum ProDrive LPS 120/240S hard disk drives implement 96-bit single and double burst Reed-Solomon error correction techniques. Single burst errors of up to 24 bits within one sector can be corrected "on-the-fly", in real time as they occur, allowing a high degree of data integrity with no impact to the drive's performance. Defect Management ----------------- The ProDrive LPS 120/240S allocates one sector per cylinder as a spare. In the factory, the media is scanned for defects. If a sector on a cylinder is found to be defective, the address of the sector is added to the drive's defect list. Sectors located physically subsequent to the defective sector are assigned logical block addresses such that a sequential ordering of logical blocks results. This inline sparing technique is employed in an attempt to eliminate slow data transfer that would result from a single defect- ive sector on a cylinder. If more than one sector is found defective on a cylinder, the inline sparing technique is applied only to the first sector. The remaining defective sectors are replaced with the nearest available spare sectors on nearby cylinders. Such an assignment of additional replacement sectors from nearby sectors rather than having a central pool of spare sectors is an attempt to minimize the motion of the actuator and head that otherwise would be needed to find a replace- ment sector. The result is minimal reduction of data throughput. Seek Time --------- ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÂÄÄÄÄÄÄÄÄ¿ Track-to-Track msec. typ. ³ 2.5 ³ msec. max. ³ 3 ³ Average msec. typ. ³ 17 ³ Average msec. max. ³ 18 ³ Full Stroke msec. typ. ³ 30 ³ msec. max. ³ 32 ³ Latency msec. avg. ³ 6.97 ³ ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÄÄÄÄÄÙ P C - D I S K The Harddisk Information Database DCI AG, Germany www.pc-disk.de ********************************************************************** G E N E R A L ********************************************************************** QUANTUM DRIVE ID Drive ID -------- In order to better assist customers, Quantum technical support engineers often ask "What is the model number or serial number of your disk drive?" Due to the various ways Quantum and its distributors may list a product, how you identify your specific Quantum product may differ from one customer to another. Below is information on how to identify your Quantum disk drive by the original model / part number and how to locate your serial number. Model / Part Number: The bar-code identifies the disk drive part number. This label can be found on either the interface connector or the drive cover plate. This sequence is also called the TLA. The first 5 alpha-numeric values are all that is needed to identify the product. As demonstrated the first two characters identify the model type, the second two identify the capacity and the fifth identifies the interface / connector type. Serial Number: Quantum disk drive serial numbers are printed on a bar-coded label and display an 11 to 12 digit numeric sequence. This label can be found on the drive plate, side or at the rear just below the interface cable connection. To use the table below; The bolded values are the characters found in the TLA, by scrolling through the table you should be able to define your specific drive. Interface values: A = ATA(IDE) S = SCSI, 50-pin Single Ended W = SCSI Wide, 68-pin Single Ended D = SCSI Wide, 68-pin Differential L = SCSI Wide, Low Voltage Differential J = SCSI SCA, 80-pin Model Capacities Product Name AT 1070 / 2100 / 4300 (Note 1) Atlas XP31070/32150/34300 BF 1280 / 2100 / 2550 Bigfoot 1.2/2.1/2.5 CP 1108 / 2216 (Note 1) Capella VP31110/32210 CR 4300 / 6400 / 8400 / 13000 Fireball CR 4.3/6.4/8.4/13.0 CX 6400 / 10200 / 13000 / 20400 Fireball CX 6.4/10.2/13.0/20.4 CY 2111 / 4335 / 6405 Bigfoot CY 2.1/4.3/6.4 DA 170 / 256 / 341 / 514 Daytona 170/256/341/514 EL 2500 / 5100 / 7600 / 10200 Fireball EL 2.5/5.1/7.6/10.2 EM 540 / 1080 / 1400 / 2100 Empire 540/1080/1400/2100 EN 525 / 700 / 1050 / 1225 ProDrive LPS 525/700/1050/1225 EP 1800 ProDrive LPS 1800 EU 540 / 810 / 1080 Europa 540/810/1080 EX 03200/05100/06400/10200/12700 Fireball EX 3.2/5.1/6.4/10.2/12.7 FB 540 / 640 / 1080 / 1280 Fireball 540/640/1080/1280 GM 120 / 240 ProDrive LPS 120/240 GP 2151 / 4301 Grand Prix XP32151/34301 HN 2275 / 4550 / 9100 Atlas II XP32275/34550/39100 KA 06400 / 09100 / 13600 / 18200 Fireball Plus KA 6.4/9.1/13.6/18.2 KN 09100 / 18200 / 36400 Atlas IV 9.1/18.2/36.4 LT 365 / 540 / 730 Lightning 365/540/730 MU 425 ProDrive 425 MV 270 / 540 Maverick 270/540 PI 42 / 85 / 127 / 170 ProDrive ELS 42/85/127/170 PX 04550 / 9100 Viking II 4.55/9.1 RR 127 / 170 / 210 / 340 / 420 LPS 127/170/210/340/420 SA 1080 / 2170 Saturn VP31080/32170 SE 2100 / 3200 / 4300 / 6400 /8400 Fireball SE 2.1/3.2/4.3/6.4/8.4 SG 1080 / 2110 Pioneer SG 1.0 / 2.1 SR 1700 / 2550 Sirocco 1.7/2.5 ST 1620 / 2160 / 3240 / 4320/6480 Fireball ST 1.6/2.1/3.2/4.3/6.4 TB 270 / 540 LPS 270/540 TD 9100 / 18000 Atlas III 9.1/18.2 TM 1080/1280/2110/2550/3200/3800 Fireball TM 1.0/1.2/2.1/2.5/3.2/3.8 TN 09100 / 18200 / 36400 Atlas 10K 9.1/18.2/36.4 TR 420 / 635 / 850 Trailblazer 420/850 TS 06400 / 08400 / 12700 / 19200 Bigfoot TS 6.4/8.4/12.7/19.2 TX 04000 / 06000 / 08000 / 12000 Bigfoot TX 4.0/6.0/8.0/12.0 VK 2275 / 4550 Viking 2.2/4.5 Note 1: Please note that early versions of the Atlas and Capella disk drives did not carry the complete TLA number scheme. Please refer to the drive cover label if you suspect that you may have either of these products. DSP drives are not included in this table. DSP series drives were manufactured by Digital and contain Digital part number schemes. QM L 1820 R TD SCA QM 3 6480 ST A À´ ³ ÀÄÂÙ ³ ÃÙ ÀÂÙ À´ ³ ÀÄÂÙ À´ ³ A B C D E F A B C E F A - Quantum Identifier B - Market Segment / Form Factor Values 2 = 2.5 inch drive 3 = 3.5 inch drive 5 = 5.25 inch drive P = Performance L = Low Cost Technology C - 4 or 5 digit Capacity Field D - Retail Number Values R = North America * E = International * * Can replace the 5 capacity digit E - Family / Product Identifier Values: See Table below F - Interface Values S = SCSI (Narrow) A = ATA/IDE SW = SCSI Wide (WSE) SWD = SCSI Wide Diff (D) SCA = SCA SCSI (J) LW = SCSI LVD (L) FC = FIBERCHANNEL (F) Match the Family / Product identifier value 'E' to the two letter value seen below. This allow you to display the specific drive you have. Family / Product Identifier --------------------------- AL = Atlas II CR = Fireball CR CY = Bigfoot CY EL = Firball EL EX = Fireball EX KA = Fireball Plus KA KN = Atlas IV PX = Viking II SE = Fireball SE SH = Pioneer SG ST = Fireball ST TD = Atlas III TN = Atlas 10K TS = Bigfoot TS TX = Bigfoot TX VK = Viking