40GB 7200RPM IDE ATA PATA 3.5in LFF Internal Hard Disk Drive HDD

This 40GB 7.2K RPM 3.5" IDE / ATA (PATA) hard disk drive is a fast legacy storage option for older desktop PCs, workstations, and IDE-era servers that use a classic 40-pin IDE ribbon cable and 4-pin Molex power. Great for retro builds, replacements, and older systems that benefit from the higher 7,200 RPM spindle speed.

✔️ GRADE A Condition!
✔️ Fully Tested, Cleaned with Warranty!

Technical Specifications

• Category: Internal Hard Drives
• Capacity: 40GB
• Spindle Speed: 7,200 RPM
• On-Board Cache / Buffer: 2MB
• Interface: IDE / ATA (PATA, 40-pin)
• Form Factor: 3.5" Desktop / LFF

Interchangeable / Replacement Part Numbers

2M920, WD400JB-00FMA0, 9T6002-730, ST340016A, SP0411N, 07N6914, D740X-6L, SV4002H, 655T0130, ST340824A, 9W2005-314, P5914-63003, WD400BB-00DKA0, 19K1568, STM3402111A, WD400BB-00JKA0, WD400BB-55JHC0, WD400BB-18DEA0, N0794, WD400JB-00ETA0, 9T6002-733, 411960-001, WD400BB-32CJA0, ST340017A, WD400BB-00AUA1, 9T6002-391, P4451-69001, 08K1141, 71P7309, 5188-1886, 1T321, 07N7403, 9CY01A-504, 07N9673, 9T6002-038, ST3402111A, K2735, 320140-005, IC35L040AVER07-0, 6E040L0, 07N8137, WD400, 2W649, 9W2015-013, 39M0129, 07N6654, WD400AW, P6080-63001, WD400BB-00FRA0, WD400BB-00GFA0, P1641-69003, 294932-005, 5187-2134, 221424-002, WD400AW-00DDK0, P6080-60101, WD400JB-00JJC0

✅ Confirmed Compatibility

Please note that the following list is not exhaustive. Compatibility depends on the system having a 3.5" drive bay and a 40-pin IDE / PATA (ATA/100/ATA/133) interface. It’s essential to verify compatibility with the system manufacturer.

✔️ Acer Aspire Desktop: Aspire T series (early/mid-2000s IDE configs), Aspire “Power” desktop lines (IDE-era configs)
✔️ Acer Veriton: 7200, 7500, 7600 (IDE-era configs)
✔️ Compaq Evo (Business Desktop): D300, D310, D500, D510, D520
✔️ Compaq Presario: S3000, S4000, SR1000, SR2000, SR5000
✔️ Dimension: 2400, 4100, 4300, 4400, 4600i, 8100, 8200, 8200 (400MHz), 8200 (533MHz), 8250 (400MHz), 8250 (533MHz), L, L486R, XPS B486R
✔️ OptiPlex GX: GX50, GX50 (under 1.2GHz), GX50 (1.2GHz and above), GX50 R2, GX60, GX60 Desktop, GX100, GX110, GX110 (slotted CPU), GX150, GX150 Desktop, GX150 Mini-tower, GX150 SFF, GX150 USFF, GX200, GX240, GX240 Desktop, GX240 Mini-tower, GX240 SFF, GX260, GX260 Desktop, GX260 Mini-tower, GX260 SFF, GX300, GX400
✔️ Precision Workstation: 220, 330, 340 (400MHz), 340 (533MHz), 350, 350 (400MHz), 350 (533MHz), 420, 450, 530, 650
✔️ Dell XPS (Desktop): Gen 2, Gen 3, 400, 600 (IDE-era configs)
✔️ eMachines Desktop: T series (IDE-era towers), W series (IDE-era configs)
✔️ Fujitsu Siemens / Fujitsu: Scenic (IDE-era configs), Esprimo (early IDE-era configs)
✔️ Gateway: E-4200 series (IDE-era configs), 500 series (IDE-era configs), 700 series (IDE-era configs)
✔️ HP Compaq Business Desktop: dc5000, dc5100
✔️ HP Pavilion Desktop: a1000 series, a4000 series, a6000 series, m7000 series, m8000 series (IDE-era configs)
✔️ HP Media Center PC: m700 / m7000 lines (IDE-era configs)
✔️ IBM NetVista: A40, A40p, M42, M43, M44 (IDE-era configs)
✔️ Lenovo ThinkCentre: A50, A51, A52 (IDE-era configs), M50, M51, M52 (IDE-era configs)
✔️ NEC PowerMate: VL series (IDE-era configs), V series (IDE-era configs)
✔️ Packard Bell: iMedia (IDE-era configs)
✔️ Sony VAIO Desktop: PCV series (IDE-era configs)
✔️ Legacy Servers / Towers (IDE/PATA-era):
✔️ Dell PowerEdge: 1600SC, 1650, 1750, 1800, 1850, 2400, 2500, 2550, 2600, 2650, 2800, 2850
✔️ HP ProLiant (select generations): older ML/DL systems that shipped with PATA/IDE internal drive cabling (IDE-era configs)

☑️ Key Features

☑️ 40GB capacity legacy IDE / ATA (PATA) hard drive for older desktops and servers
☑️ Faster 7,200 RPM spindle speed versus typical 5,400 RPM IDE drives
☑️ Standard 3.5" LFF form factor fits typical desktop towers
☑️ Fully tested, cleaned, and guaranteed working
☑️ Ideal for retro rebuilds, legacy repairs, and data recovery workflows

⚙️ Fit Notes

• This is a 3.5" IDE / PATA hard drive (40-pin ribbon + 4-pin Molex power). It will NOT work in SATA-only systems without additional adapters.
• Many IDE systems require correct jumper settings: Master / Slave / Cable Select (match your existing setup).

⭐ External Enclosure Add-On (Sold Separately)

Want to use this IDE drive as an external USB drive for cloning, imaging, recovery, or archiving? This enclosure is an excellent add-on for this legacy 3.5" IDE drive:

3.5 Inch USB 2.0 IDE PATA EIDE Hard Drive External Enclosure - Tool-Free - With AC Power Adapter

• Tool-free design for quick installs
• Supports 3.5" IDE / PATA / EIDE hard drives
• USB 2.0 connectivity (plug-and-play)
• Includes AC power adapter (required for 3.5" desktop drives)
• Ideal for transferring data from older drives to modern PCs

⭐ Need a Larger Capacity?

• If you need more storage but want to stay with the same legacy 3.5" IDE / PATA interface, we also offer an 80GB option that’s a great upgrade for many older desktops and servers.
• Western Digital WD800BB - 80GB 7.2K RPM IDE 3.5" Hard Disk Drive (HDD)