Seagate ST340015A 40GB IDE Hard Drive HP 335176-001 320139-001 Low Profile 3.5"

Seagate ST340015A 40GB IDE Hard Drive HP 335176-001 320139-001 Low Profile 3.5"

The Seagate ST340015A is a 40GB low-profile 3.5" IDE (ATA/PATA) hard drive sourced as an HP spare part under part numbers 335176-001 and 320139-001. This is a standard parallel ATA desktop hard drive used in HP desktop PCs, workstations, and compatible systems from the early-to-mid 2000s. The drive draws +5V and +12V power and connects via a standard 40-pin IDE ribbon cable.

Specifications & What's Included

• Manufacturer: Seagate
• Model: ST340015A
• Capacity: 40 GB
• Interface: IDE (ATA / PATA) — 40-pin connector
• Form Factor: 3.5" Low Profile
• Power: +5V @ 0.58A, +12V @ 0.31A
• HP Part Number (MPN): 335176-001
• HP BPC: 320139-003
• HP GPN: 234026-003
• CT Number: 299B70083SC14L
• Date Code: 06163
• PCB: Seagate green logic board with main controller IC and secondary ICs visible
• Connectors: 40-pin IDE data, 4-pin Molex power
• Includes: Drive only — no cables or mounting hardware

Applications

The Seagate ST340015A is an ATA/PATA hard drive from the early 2000s, a generation when IDE was the dominant desktop storage interface before SATA became the standard. Drives of this type are used as direct replacements in aging HP desktops, workstations, and other systems that require a 40-pin IDE interface — including HP Compaq d-series desktops, Evo workstations, and similar platforms from that era. They are also commonly sought for legacy system restoration, industrial PCs, CNC controllers, and embedded systems that require IDE storage and cannot accept SATA drives without an adapter. The low-profile form factor makes it a good fit for slim desktop and small-form-factor chassis designs.