20GB 7.2K IDE PATA ATA 3.5 Inch Hard Drive HDD for Legacy Desktops Industrial PCs

20GB 7200RPM 3.5" IDE / PATA hard disk drive for compatible legacy desktops, workstations, industrial PCs, embedded systems, test equipment, DVR-style systems, and older IDE storage platforms. This drive is designed for systems using a standard 40-pin desktop IDE data connector and 4-pin Molex power connector, making it a useful replacement for failed, missing, noisy, or unreadable legacy ATA hard drives.

What’s Included

• Included Item: 1x 20GB 7.2K IDE / PATA / ATA 3.5" hard disk drive
• Not Included: IDE ribbon cable, Molex power cable, mounting screws, rails, software, external enclosure, or adapter unless shown

Technical Specifications

• Storage Capacity: 20GB
• Drive Type: Internal desktop hard disk drive
• Form Factor: 3.5" desktop HDD
• Interface: IDE / PATA / EIDE / ATA
• Rotational Speed: 7200RPM / 7.2K
• Data Connector: 40-pin IDE / PATA connector
• Power Connector: 4-pin Molex power connector
• Interface Class: Ultra ATA / ATA-66 / ATA-100 / ATA-133 class depending on supplied interchangeable drive model
• Cache: 2MB / 8MB depending on supplied interchangeable drive model
• Drive Height: Standard 1" desktop drive height
• Installation Type: Internal screw-mounted 3.5" drive bay installation
• Application Type: Legacy desktop, workstation, industrial PC, embedded system, and equipment storage replacement

Connector & Jumper Details

• Data Interface: 40-pin IDE / PATA
• Power Input: 4-pin Molex
• Cable Type: 40-pin IDE ribbon cable or 80-conductor Ultra ATA ribbon cable
• Jumper Support: Master / Slave / Cable Select settings vary by drive model
• Recommended Cable: 80-conductor IDE cable is recommended for best Ultra ATA performance when supported
• Fit Requirement: Match the original drive interface, capacity requirements, jumper setting, BIOS support, and mounting style before installation

Interchangeable / Replacement Part Numbers

07N9207, 176005-010, 180475-002, 239693-002, 251974-B21, 255547-001, 322821-001, 370311-002, 9T6004-001, 9T6004-030, 9T6004-032, 9T6004-132, A7194A, G8BC00001210, IC35L020AVVA07-0, IC35L020AVER07-0, IC35L020AVVN07-0, P1732-69001, P2666A, P2812-60105, P2812-63005, P2812-69005, P2832-69001, P2833-63001, P2833-69001, P3331-69001, P4736-60103, P4736-63003, P4736-69001, P4736-69003, P4738-60103, P4738-63003, P4738-69003, P4738-69701, P5913-60101, P5913-63001, P5913-69001, P6078-60101, P6078-69001, P6078-69099, P6154-63701, P6154-69701, P8982-69001, ST320011A, ST320014A, ST320414A, ST320420A, ST320424A, WD-200BB, WD200BA, WD200BB-00AUA1, WD200BB-00CAA0, WD200BB-00CAA1, WD200BB-00DGA0, WD200BB-00JSA0, WD200BB-32CLB0, WD200BB-53DEA0, WD200BB-60AUA1, WD200BB-60CJA0, WD200BB-60CVB0, WD200BB-75AUA1, WD200BB-75CAA0, WD200BB-75CLB0, WD200BB-75DEA0, WD200JB, 6L020J1, 6Y020L0, 6E020L0, HDS722020VLAT20, HDT722020DLAT80

Compatible External Enclosure Sold Separately

For USB access, data recovery, cloning, backup, or bench testing, this 3.5" IDE / PATA drive can be used with a compatible powered external enclosure: 3.5" Desktop USB 2.0 IDE PATA EIDE Hard Drive External Enclosure

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on your system’s IDE controller, BIOS capacity support, cable type, jumper setting, operating system, drive bay, and power connector. It’s essential to verify your original drive interface and system storage requirements before ordering.

✔ Legacy 3.5" IDE Desktop Drive Bays: Compatible with desktop systems using a standard 3.5" internal drive bay, 40-pin IDE data connector, and 4-pin Molex power connector
✔ Deskpro / Evo / Presario Desktop Models: Deskpro EN, Deskpro EP, Deskpro EX, Evo D300, Evo D310, Evo D500, Evo D510, Evo D530, Presario 5000 Series, Presario 6000 Series, Presario 7000 Series
✔ Vectra / Pavilion / Business Desktop Models: Vectra VL400, Vectra VL420, Vectra VL800, Brio, e-PC, e-Vectra, Pavilion 5000 Series, Pavilion 7000 Series, Pavilion a100 Series, a200 Series, a300 Series, a400 Series, a500 Series, t300 Series
✔ OptiPlex Desktop Models with IDE Storage: OptiPlex GX1, GX100, GX110, GX115, GX150, GX200, GX240, GX260, GX270, GX280 IDE configurations
✔ Dimension Desktop Models with IDE Storage: Dimension 4100, 4300, 4400, 4500, 4550, 4600, 4700 IDE configurations, 8100, 8200, 8250, 8300
✔ Precision Workstation Models with IDE Storage: Precision 330, 340, 350, 360, 370, 420, 530, 650 IDE configurations
✔ NetVista / ThinkCentre Desktop Models: NetVista A20, A21, A22, A30, A40, A50, M41, M42, M50, M51, ThinkCentre A30, A50, A51, M50, M51, S50, S51 IDE configurations
✔ Aptiva / IntelliStation IDE Systems: Aptiva desktop systems with 3.5" IDE drive bays, IntelliStation E Pro, M Pro, and Z Pro configurations using PATA desktop storage
✔ Gateway Desktop Models: Gateway E-1400, E-2000, E-4000, E-6000, 500 Series, 700 Series, Profile desktop configurations with internal 3.5" IDE storage
✔ eMachines Desktop Models: eMachines T Series, W Series, EL / desktop tower systems using 3.5" IDE / PATA hard drives
✔ AcerPower / Veriton / Aspire Desktop Models: AcerPower desktop systems, Veriton 3300, 3500, 3600, 5600, 7600, Aspire T120, T130, T135, T160, T180 IDE configurations
✔ Power Mac / iMac / eMac IDE Systems: Power Mac G3 Blue & White, Power Mac G4, iMac G3, iMac G4, eMac, and other systems using internal 3.5" IDE / ATA hard drives
✔ Sun / Unix Workstation IDE Systems: Ultra 5, Ultra 10, Blade 100, Blade 150 and compatible workstation configurations using IDE / ATA internal storage
✔ Legacy Server / Workgroup Systems: Entry-level tower servers, small office servers, NAS-style systems, and workgroup systems using internal 3.5" IDE / ATA hard drives instead of SCSI, SATA, or SAS
✔ DVR / Security / Embedded Systems: Legacy DVRs, security recorders, POS terminals, kiosk PCs, medical equipment PCs, CNC controllers, industrial control PCs, and test equipment originally configured with 20GB-class 3.5" IDE / PATA drives
✔ Socket 370 / Pentium III Desktop Boards: Systems using Intel 810, 815, VIA Apollo Pro, SiS 630, and similar chipsets with standard 40-pin IDE ports
✔ Socket A / Athlon XP Desktop Boards: Systems using VIA KT133, KT266, KT333, KT400, nForce, nForce2, and SiS 735 / 746 chipsets with 40-pin IDE storage support
✔ Socket 478 / Pentium 4 Desktop Boards: Systems using Intel 845, 848, 850, 865, 875, VIA P4X, and SiS 645 / 648 / 655 chipsets with IDE / ATA hard drive support
✔ Early LGA775 IDE Desktop Boards: Systems using Intel 915, 925, 945, VIA, SiS, and mixed SATA / IDE boards when the system includes a 40-pin IDE hard drive connector
✔ Intel Desktop Motherboards: D815EEA, D815EPEA, D845EBG2, D845PESV, D845GLAD, D845GVSR, D865PERL, D865GBF, D875PBZ, D915GAV, D915GEV, D945GNT IDE configurations
✔ ASUS Desktop Motherboards: P2B, CUSL2, TUSL2, A7V, A7V133, A7N8X, A7N8X-E, P4B, P4B533, P4PE, P4P800, P4C800, K8V, A8V and other boards with 40-pin IDE connectors
✔ MSI Desktop Motherboards: 815E Pro, KT3 Ultra, KT4 Ultra, K7N2, 845E Max, 865PE Neo, 875P Neo, K8T Neo, K8N Neo and other boards with 3.5" IDE drive support
✔ Gigabyte Desktop Motherboards: GA-6OXET, GA-7VAX, GA-7N400, GA-8I845, GA-8IPE1000, GA-8KNXP, GA-K8NS, GA-K8VT800 and other boards with PATA storage support
✔ Industrial / Embedded Motherboards: Industrial ATX, microATX, Mini-ITX, PICMG, SBC, backplane, and machine-controller boards with standard 40-pin IDE / PATA storage connectors

☑️ Key Features

☑️ 20GB legacy 3.5" IDE / PATA desktop hard drive
☑️ 7200RPM / 7.2K spindle speed for compatible legacy systems
☑️ Standard 40-pin IDE data connector
☑️ Standard 4-pin Molex power connector
☑️ Useful replacement for failed, missing, noisy, or unreadable IDE hard drives
☑️ Good fit for legacy desktops, industrial PCs, embedded systems, test equipment, and recovery projects
☑️ Supports Master / Slave / Cable Select jumper configurations depending on drive model
☑️ Compatible with many ATA-66, ATA-100, and ATA-133 IDE controller environments
☑️ Works with compatible external USB IDE enclosures for bench testing, cloning, or data access
☑️ Direct-fit replacement when the original drive capacity, connector type, and system BIOS support match

⚙️ Fit Notes

• Match your original hard drive model or part number whenever possible
• Confirm your system uses a 3.5" IDE / PATA / ATA hard drive
• Confirm your system has a 40-pin IDE data cable and 4-pin Molex power connector
• This drive is not compatible with SATA, SAS, SCSI, Fibre Channel, M.2, mSATA, NVMe, or 2.5" laptop IDE bays
• Check the jumper setting on the old drive and match Master, Slave, or Cable Select as required by your system
• Some systems require the boot drive to be set as Master or installed at the end connector of the IDE cable
• An 80-conductor IDE ribbon cable is recommended for Ultra ATA/66, ATA/100, and ATA/133 operation
• Some very old systems may have BIOS capacity limits; a 20GB drive may require BIOS support, updated firmware, partition limits, or drive overlay software
• Operating system installation, cloning, formatting, or partitioning may be required after installation
• For RAID, embedded, industrial, or machine-control applications, verify the original drive capacity and geometry requirements before replacing
• This is an internal desktop drive and is not USB-ready by itself; use a compatible powered 3.5" IDE enclosure for USB access
• Always power down the system, disconnect AC power, and follow proper ESD handling procedures before installation