Replacement for AC340-0040LA: Drop-In Alternatives We Stock
Looking for a replacement for the AC340-0040LA (AC340-0040LA - Western Digital Caviar 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive)? Pro Disk Network ships Western Digital drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the AC340-0040LA
| SKU | AC340-0040LA |
|---|---|
| Product | AC340-0040LA - Western Digital Caviar 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive |
| Current price | $125.71 |
| Stock status | In Stock |
| Detail page | View AC340-0040LA › |
Drop-in replacements for AC340-0040LA
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
AC3400032LA - Western Digital Caviar 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: AC3400032LA
Price: $124.84
AC22400 - Western Digital Caviar 22400 2.4GB 5200RPM ATA-33 128KB Cache 3.5-inch Hard Drive
SKU: AC22400
Price: $170.93
AC22400-60LA - Western Digital Caviar 22400 2.4GB 5200RPM ATA-33 128KB Cache 3.5-inch Hard Drive
SKU: AC22400-60LA
Price: $179.62
WDAC34000 - Western Digital Caviar 34000 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: WDAC34000
Price: $205.26
AC34000 - Western Digital Caviar 34000 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: AC34000
Price: $316.84
AC34000-71LA - Western Digital Caviar 34000 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: AC34000-71LA
Price: $344.33
AC3400000LAI - Western Digital Caviar 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: AC3400000LAI
Price: $345.62
AC34000-00LA - Western Digital Caviar 34000 4GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: AC34000-00LA
Price: $382.59
99-004199-005 - Western Digital Caviar 1.6GB 5200RPM ATA-33 128KB Cache 3.5-inch Hard Drive
SKU: 99-004199-005
Price: $83.28
AC33100 - Western Digital Caviar 33100 3.1GB 5200RPM IDE/ATA 128KB Cache 3.5-inch Hard Drive
SKU: AC33100
Price: $97.36
WDAC21700 - Western Digital Caviar 1.7GB 5200RPM ATA-33 128KB Cache 3.5-inch Hard Drive
SKU: WDAC21700
Price: $98.84
WDAC11200-00LA - Western Digital Caviar 1.2GB 5200RPM ATA-33 256KB Cache 3.5-inch Hard Drive
SKU: WDAC11200-00LA
Price: $102.09
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.