Classic 3.5-inch slim-line IDE hard drive from IBM’s early 1990s lineup. The IBM H3171-A2 provides 171 MB of reliable formatted storage, making it an excellent choice for restoring authentic 386, 486, and early Pentium-era PCs.

*** Hard drive is tested for no bad sectors and is formatted as a FAT32 partition.

Key Specifications:

• Capacity: 171 MB formatted
• Form Factor: 3.5-inch Slim-Line (SL) – low profile (≈1 inch height)
• Interface: IDE / ATA (40-pin AT-Bus, ATA-1 compatible)
• Spindle Speed: 3,600 RPM
• Cache Buffer: 96 KB (segmented with read look-ahead)
• Average Seek Time: 14 ms (track-to-track ~4 ms)
• Data Transfer Rate: Up to 8.3 MB/s (external PIO Mode 2), ~3 MB/s internal
• Geometry (Logical): 984 cylinders / 10 heads / 34 sectors
• Power: Standard +5V / +12V Molex 4-pin connector
• Jumper Configurable: Master / Slave / Cable Select

Built for Vintage Systems

This genuine IBM drive was commonly used in IBM PS/1, PS/ValuePoint, and many other mid-1990s desktop computers. It performs perfectly in period-correct restorations, DOS, Windows 3.1, and Windows 95/98 retro builds.

Classic 3.5-inch slim-line IDE hard drive from Seagate’s early 1990s lineup. The Seagate ST3120A offers 107 MB (approximately 120 MB unformatted) of reliable storage, making it a perfect choice for restoring vintage 386, 486, and early Pentium PCs.

*** Hard drive is tested for no bad sectors and is formatted as a FAT32 partition.

Key Specifications:

• Capacity: 107 MB formatted (≈120 MB unformatted)
• Form Factor: 3.5-inch Slim-Line (SL) – low-profile design
• Interface: IDE / ATA (AT-Bus, 40-pin)
• Spindle Speed: 3,200 – 3,211 RPM
• Cache Buffer: 32 KB
• Average Seek Time: ~17–19 ms
• Data Transfer Rate: Up to 8–10 MB/s (PIO Mode)
• Geometry: 1024 cylinders / 12 heads / 17 sectors
• Power: Standard +5V / +12V Molex connector
• Jumper Configurable: Master / Slave / Cable Select

Built for Retro Computing

This genuine Seagate drive was widely used in mid-1990s desktop computers. It excels in period-correct restorations, DOS, Windows 3.1, Windows 95/98 systems, and retro gaming builds.

Classic 3.5-inch IDE hard drive from Maxtor’s 7000 series, offering dependable storage for vintage PCs and retro computing builds. The Maxtor 7171AT delivers 170–172 MB of formatted capacity in a compact, low-profile design that was a popular choice in the mid-1990s.

*** Hard drive is tested for no bad sectors and is formatted as a FAT32 partition.

Key Specifications:

• Capacity: 170 MB (172 MB unformatted)
• Form Factor: 3.5-inch Slim-Line (SL)
• Interface: IDE / ATA (AT-Bus)
• Spindle Speed: 3,551 RPM
• Cache Buffer: 64 KB
• Average Seek Time: ~15–17 ms
• Data Transfer Rate: Up to 8–10 MB/s (PIO Mode)
• Jumper Configurable: Master / Slave / Cable Select (CS)
• Power: Standard +5V / +12V Molex connector

Built for Vintage Systems

This genuine Maxtor OEM drive was commonly found in 386, 486, and early Pentium desktop computers. It works perfectly as a primary or secondary drive in retro PCs, period-correct restorations, or DOS/Windows 3.1/95/98 gaming and productivity machines.

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition.

Here are the key specifications (compiled from archived Maxtor/Seagate DiamondMax 10 PATA product manual, data sheets, and vendor listings):

• Capacity: 100 GB (100,000,000,000 bytes / 100 × 10⁹ bytes; approximately 93 GiB usable after formatting)
• Form Factor: 3.5-inch
• Interface: Ultra ATA/133 (also known as ATA-7 or Ultra DMA Mode 6) — maximum burst transfer rate up to 133 MB/s (backward compatible with ATA/100, ATA/66, etc.)
• Spindle Speed (RPM): 7,200 RPM
• Cache / Buffer: 8 MB
• Average Seek Time: ~9 ms (typical read; Maxtor spec lists 9 ms average)
• Average Latency: ~4.17 ms
• Sustained Data Transfer Rate (outer zones, max): Typically ~60–80 MB/s (varies by zone; good for the time due to density and cache)
• Internal Data Transfer Rate (max): Around 700–900 Mbit/s (~87–112 MB/s theoretical, sustained lower in practice)
• Bytes per Sector: 512
• Guaranteed Sectors: Approximately 195,352,516 (exact for 100 GB models in the series)
• Number of Platters / Heads: Typically 2 platters / 4 heads (using high-density ~50 GB/platter technology)
• Power Connector: Standard 4-pin Molex (IDE power)

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition.

Here are the key specifications:

• Capacity: 160 GB (160,000,000,000 bytes / 160 × 10⁹ bytes; approximately 149 GiB usable after formatting)
• Form Factor: 3.5-inch
• Interface: Ultra ATA/100 (also known as ATA-6, Parallel ATA / IDE / PATA) — maximum burst transfer rate up to 100 MB/s
• Spindle Speed (RPM): 7,200 RPM
• Cache / Buffer: 2 MB
• Average Seek Time: ~8.9 ms (typical read)
• Average Latency: ~4.2 ms
• Sustained Data Transfer Rate (outer zones, max): Typically ~50–65 MB/s (varies by zone; typical for high-density 7200 RPM IDE drives of the era)
• Internal Data Transfer Rate (max): Around 600–800 Mbit/s (~75–100 MB/s theoretical, sustained lower)
• Bytes per Sector: 512
• Guaranteed Sectors: 312,581,808
• Number of Platters / Heads: Typically 3–4 platters (around 40–53 GB per platter technology at the time)
• Power Connector: Standard 4-pin Molex (some variants supported FlexPower for SATA power compatibility)
• Other Features:
  • Data Lifeguard™ technology (WD’s monitoring and protection system)
  • ShockGuard™ for shock protection
  • SecureConnect™ connector (improved IDE cable connection reliability)
  • SMART support
  • Quiet operation emphasized (though not as advanced as later FDB motors)
  • 3-year limited warranty (original)
• Power Consumption (approximate):
  • Read/Write: ~8.6 W
  • Idle: ~8.1 W
  • Standby/Sleep: ~1.0–1.1 W
• Weight: Approximately 0.6–0.7 kg (1.3–1.5 lbs)
• Dimensions: Standard 3.5″ — 101.6 mm width × 147 mm depth × ~26 mm height
• Operating Temperature: 0°C to 60°C (typical for desktop drives)
• Non-operating Shock: Up to 300–350 G (ShockGuard protection)

This drive offered solid performance for mid-2000s desktop PCs, with good speed thanks to 7200 RPM and a decent cache, though its 2 MB buffer was smaller than some competitors’ 8 MB versions by 2006.

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition.

Here are the key specifications:

• Capacity: 160 GB (160,000,000,000 bytes / 160 × 10⁹ bytes; ~149 GiB usable after formatting)
• Form Factor: 3.5-inch
• Interface: Ultra ATA/100 (also called ATA-6, Parallel ATA / IDE / PATA) — maximum burst transfer rate up to 100 MB/s
• Spindle Speed (RPM): 7,200 RPM
• Cache / Buffer: 8 MB
• Average Seek Time: ~8.5–9 ms (typical read)
• Average Latency: ~4.16 ms
• Sustained Data Transfer Rate (outer zones, max): Up to ~78–85 MB/s (depending on source; perpendicular tech helped achieve higher densities)
• Internal Data Transfer Rate (max): Around 1,000–1,200 Mbit/s (~125–150 MB/s theoretical, but sustained lower)
• Bytes per Sector: 512
• Guaranteed Sectors: 312,581,808
• Recording Technology: Perpendicular Magnetic Recording (PMR) — first major Seagate desktop series to use this
• Number of Platters / Heads: Typically 1–2 platters (high-density 160 GB/platter class at launch)
• Power Connector: Standard 4-pin Molex

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition.

Here are the key specifications:

• Capacity: 160 GB (160,000,000,000 bytes / 160 × 10⁹ bytes; approximately 149 GiB usable)
• Form Factor: 3.5-inch
• Interface: Ultra ATA/100 (also known as ATA-6 or Parallel ATA / IDE / PATA)
• Spindle Speed (RPM): 7,200 RPM
• Cache / Buffer: 2 MB
• Average Seek Time: 8.5 ms (read typical)
• Average Latency: 4.16 ms
• Sustained Data Transfer Rate (outer diameter, max): ~58 MB/s
• Internal Data Transfer Rate (max): ~85.4 MB/s
• Bytes per Sector: 512
• Guaranteed Sectors: 312,581,808
• Number of Platters / Heads: Typically 2–3 platters (with 80 GB per platter technology at the time)
• Power Connector: Standard 4-pin Molex
• Other Features: Fluid Dynamic Bearing (FDB) motor for quieter operation and reliability; part of Seagate’s high-density 7200 RPM lineup

This drive was known for good performance in its era, especially compared to 5400 RPM models, and was commonly used in desktop PCs before the shift to SATA interfaces.

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition.

Here are the key specifications based on the official Seagate Barracuda 7200.7 Product Manual (covers ST380011A) and consistent historical/vendor data:

• Capacity: 80 GB (formatted; actual usable space ~74–75 GiB due to binary vs. decimal calculation and overhead)
• Interface: IDE / PATA (Parallel ATA), Ultra ATA/100 (ATA-6), backward compatible with ATA/66, ATA/33, PIO modes, etc. → Max theoretical burst transfer rate: 100 MB/s
• Form Factor: 3.5-inch (standard desktop, ~1-inch / 26.1 mm height)
• Spindle Speed: 7200 RPM
• Cache / Buffer: 2 MB
• Average Seek Time: ~8.5–9.5 ms (read/write; typical ~9.5 ms read from data sheets)
• Average Latency: ~4.16 ms (at 7200 RPM)
• Platter / Head Configuration: Typically 1 platter / 2 heads (single-platter design using ~80 GB/platter density technology)
• Other Features:
  • Fluid Dynamic Bearing (FDB) motor (SoftSonic in some references) for quieter, smoother, and more reliable operation with reduced vibration
  • 3D Defense System (Seagate’s data protection: shock sensors, embedded servo, recovery features)
  • S.M.A.R.T. support for predictive failure monitoring
  • Enhanced shock protection and thermal monitoring
  • Low power consumption and good acoustics for a 7200 RPM drive
• Power Consumption: Typical for the era (~6–9W active; standard 4-pin Molex power connector)
• MTBF (Mean Time Between Failures): ~600,000–1 million hours (manufacturer claim for Barracuda 7200.7 series)
• Acoustics: Idle ~2.8–3.0 bels (~28–30 dB); seek ~3.0–3.4 bels (~30–34 dB) (relatively quiet for class, thanks to FDB)
• Compatibility: Works with older IDE/ATA motherboards; jumper settings for Master/Slave/Cable Select (standard Seagate layout—check drive label: typically Master: jumper on pins 7-8 or as marked, Slave: no jumper, CS: jumper on pins 5-6 for cable-determined role; use 80-wire cable for ATA/100 performance)
• Jumper Settings (typical Seagate Barracuda ATA):
  • Master (or single drive): Jumper closed on designated pins
  • Slave: No jumper
  • Cable Select (CS): Jumper on CS pins; recommended for plug-and-play
  • Additional jumper options: Limit capacity (for legacy BIOS compatibility, e.g., to 32 GB or 137 GB LBA)

This drive delivered strong performance for its time—sequential transfers often 50–85 MB/s (outer zones higher, up to ~85 MB/s internal), quick seeks, and better reliability/noise than many 5400 RPM drives. It was a go-to choice for gaming, office, and general desktop use, competing with Western Digital Caviar WD800BB, Maxtor DiamondMax 9, and Samsung SpinPoint P80 equivalents.

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition. Actual drive is pictured.

Here are the key specifications based on the official Seagate Barracuda 7200.9 PATA Product Manual (Rev. C/F) and consistent vendor/historical data:

• Capacity: 80 GB (formatted; actual usable space ~74–75 GiB due to binary vs. decimal calculation and overhead)
• Interface: IDE / PATA (Parallel ATA), Ultra ATA/100 (ATA-6), backward compatible with ATA/66, ATA/33, PIO modes, etc. → Max theoretical burst transfer rate: 100 MB/s
• Form Factor: 3.5-inch (standard desktop, ~1-inch / 26.1 mm height)
• Spindle Speed: 7200 RPM
• Cache / Buffer: 2 MB
• Average Seek Time: ~11 ms (read/write; typical value from manual and listings)
• Average Latency: ~4.16 ms (at 7200 RPM)
• Platter / Head Configuration: Typically 1 platter / 2 heads (using high-density ~80–100 GB/platter technology of the era; single-platter design for this capacity point in the 7200.9 lineup)
• Other Features:
  • Seagate’s SoftSonic motor (FDB or similar for reduced noise/vibration)
  • Enhanced G-Force Protection and shock sensors
  • S.M.A.R.T. support for health monitoring and predictive failure
  • Quiet operation focus (good acoustics for a 7200 RPM drive)
  • Supports legacy LBA addressing (16383 cylinders / 16 heads / 63 sectors in CHS mode for compatibility)
• Power Consumption: Typical for the era (~6–9W active; standard 4-pin Molex power connector)
• MTBF (Mean Time Between Failures): ~600,000–1 million hours (manufacturer claim for Barracuda 7200.9 series)
• Acoustics: Idle ~28–30 dB; seek ~30–34 dB (relatively quiet for class)
• Compatibility: Works with older IDE/ATA motherboards; jumper settings for Master/Slave/Cable Select (standard Seagate layout—check drive label: typically Master: jumper on specific pins (e.g., 7-8), Slave: no jumper, CS: jumper on pins 5-6 for cable-determined role; use 80-wire cable for ATA/100 speeds)
• Jumper Settings (typical Seagate Barracuda ATA):
  • Master (or single drive): Jumper closed on designated pins
  • Slave: No jumper
  • Cable Select (CS): Jumper on CS pins; recommended for modern installs

This drive provided strong performance for its time—sequential transfers often 50–70+ MB/s in outer zones, quick seeks, and better reliability/noise than many 5400 RPM alternatives. It was popular for budget builds, upgrades, and as a secondary drive alongside SATA in transitional systems.

*** Hard drive is tested for good S.M.A.R.T. , no bad sectors and is formatted as an NTFS partition. Actual drive is pictured.

Here are the key specifications based on official Seagate product manuals (U Series 6 Family Product Manual, Rev. B), installation guides, and consistent historical/vendor data:

• Capacity: 80 GB (formatted; actual usable space ~74–75 GiB due to binary vs. decimal calculation and overhead)
• Interface: IDE / PATA (Parallel ATA), Ultra ATA/100 (ATA-6), backward compatible with ATA/66, ATA/33, PIO modes, etc. → Max theoretical burst transfer rate: 100 MB/s
• Form Factor: 3.5-inch (standard desktop, ~1-inch / 26.1 mm height)
• Spindle Speed: 5400 RPM
• Cache / Buffer: 2 MB
• Average Seek Time: ~8.9–9.5 ms (read/write; typical for the series, with access time ~14–15 ms including latency)
• Average Latency: ~5.6 ms (at 5400 RPM)
• Platter / Head Configuration: Typically 2 platters / 4 heads (using ~40 GB/platter density technology common in Seagate’s U Series at the time)
• Other Features:
  • 3D Defense System (Seagate’s data protection suite: includes shock sensors, embedded servo for better error handling, and data recovery tools)
  • Quiet operation emphasis (lower RPM helps reduce noise/vibration compared to 7200 RPM drives)
  • Shock resistance (non-operating up to ~350G typical for series)
  • S.M.A.R.T. support for predictive monitoring
  • Fluid Dynamic Bearing (FDB) motor in many units for smoother, quieter spins (though some early U6 variants used ball bearings)
• Power Consumption: Typical for the era (~5–7W active; standard 4-pin Molex power connector)
• MTBF (Mean Time Between Failures): ~600,000–1 million hours (manufacturer claim for U Series; some sources list up to 1.2M hours)
• Acoustics: Idle ~26–30 dB; seek ~30–34 dB (relatively quiet due to 5400 RPM design)
• Compatibility: Works with older IDE/ATA motherboards; jumper settings for Master/Slave/Cable Select (standard Seagate layout—check drive label: typically Master: jumper on pins 7-8 or as marked, Slave: no jumper, CS: jumper on pins 5-6 for cable-determined role; use 80-wire cable for best ATA/100 performance)
• Jumper Settings (typical Seagate U Series ATA):
  • Master (or single drive): Jumper closed on designated pins (often center or labeled)
  • Slave: No jumper
  • Cable Select (CS): Jumper on CS pins; recommended for plug-and-play setups

This drive offered good value and reliability for everyday use (office, web, light multimedia), with lower heat/noise than 7200 RPM competitors, though sustained transfers were slower (~30–45 MB/s outer zones). It was part of Seagate’s U Series lineup (not the faster Barracuda 7200.x series, despite some vendor mix-ups).