Replacement for PR4100: Drop-In Alternatives We Stock
Looking for a replacement for the PR4100 (Western PR4100 PR4100 - WD My Cloud Pro PR4100 4-Bay NAS Server 16Gb RAM. In Stock)? 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 PR4100
| SKU | PR4100 |
|---|---|
| Product | Western PR4100 PR4100 - WD My Cloud Pro PR4100 4-Bay NAS Server 16Gb RAM. In Stock |
| Stock status | In Stock |
| Detail page | View PR4100 › |
Drop-in replacements for PR4100
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.
WDBWZE0080KBK-NESN - Western Digital EX4100 Expert Series 4-Bay 8TB My Cloud Network Attached Storage NAS
SKU: WDBWZE0080KBK-NESN
Price: $1,061.05
WDBVBZ0160JCH-NESN - Western Digital MY Cloud EX2 Ultra 2-Bay 16TB Network Attached Storage Server
SKU: WDBVBZ0160JCH-NESN
Price: $1,512.00
Western WD8005FFBX Western Digital WD8005FFBX Red Pro 8TB 7200RPM SATA 6Gb/s 256MB Cache NAS Hard Drive
SKU: WD8005FFBX
Price: $703.95
Western WD260KFGX Western Digital WD260KFGX Red Pro 26TB 7200RPM SATA 6Gb/s 512MB Cache CMR 3.5-inch NAS Hard Drive
SKU: WD260KFGX
Price: $1,631.58
Western WD20EFPX WD20EFPX - Western Digital 2TB 5400 RPM SATA 6Gb/s 64MB Cache Red Plus Internal NAS 3.5-inch Hard Drive
SKU: WD20EFPX
Price: $352.63
Western WDS400T2R0A-68CKB0 Western Digital WDS400T2R0A-68CKB0 Red SA500 4TB SATA 6Gb/s 2.5-inch NAS Internal Solid State Drive
SKU: WDS400T2R0A-68CKB0
Price: $1,984.21
WDBWZE0160KBK-NESN - Western Digital My Cloud EX4100 Expert Series 16TB Network Attached Storage Server
SKU: WDBWZE0160KBK-NESN
Price: $2,354.95
WDBLGT0040KBK-EESN - Western Digital Sentinel DX4000 2-Bay 4TB (2 x 2TB) 2 x 10/100/1000Mbps (RJ-45) Ethernet 2 x USB 3.0 RAID 1 Small Office Storage Server
SKU: WDBLGT0040KBK-EESN
Price: $1,302.96
WD4003FFBX-68MU3N0 - Western Digital Red Pro NAS 4TB 7200RPM SATA 6Gbps 256MB Cache 3.5-inch Hard Drive
SKU: WD4003FFBX-68MU3N0
Price: $380.04
WD4003FFBX - Western Digital Red Pro NAS 4TB 7200RPM SATA 6Gbps 256MB Cache 3.5-inch Hard Drive
SKU: WD4003FFBX
Price: $382.59
WD102KFBX - Western Digital Red Pro NAS 10TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard Drive
SKU: WD102KFBX
Price: $712.64
WD102KFBX-68M95N0 - Western Digital Red Pro NAS 10TB 7200RPM SATA 6Gb/s 256MB Cache 3.5-inch Hard Drive
SKU: WD102KFBX-68M95N0
Price: $712.64
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.