Replacement for TR-004-US: Drop-In Alternatives We Stock
Looking for a replacement for the TR-004-US (TR-004-US QNAP TR-004-US SATA2 4-Bay Tower RAID Expansion Enclosure for both NAS and Computers)? Pro Disk Network ships 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 TR-004-US
| SKU | TR-004-US |
|---|---|
| Product | TR-004-US QNAP TR-004-US SATA2 4-Bay Tower RAID Expansion Enclosure for both NAS and Computers |
| Current price | $331.58 |
| Stock status | In Stock |
| Detail page | View TR-004-US › |
Drop-in replacements for TR-004-US
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.
REXP-1220U-RP-US QNAP REXP-1220U-RP-US SAS/SATA/SSD 12-Bay 2U Rackmount RAID Expansion Enclosure for QNAP NAS
SKU: REXP-1220U-RP-US
Price: $5,157.89
REXP-1620U-RP-US QNAP REXP-1620U-RP-US SAS/SATA/SSD 16-Bay 3U Rackmount RAID Expansion Enclosure for QNAP NAS
SKU: REXP-1620U-RP-US
Price: $6,019.50
EJ1600-V2-US QNAP EJ1600-V2-US SAS 12Gbps 16-Bay 3U Rackmount RAID Expansion Enclosure for QNAP NAS
SKU: EJ1600-V2-US
Price: $6,926.32
TS-431P-US QNAP TS-431P-US Alpine AL-212 1.7GHz/ 1GB RAM/ 2GbE/ 4SATA3/ USB3.0/ 4-Bay Tower NAS for Home & SOHO
SKU: TS-431P-US
Price: $606.87
TS-451+-8G-US QNAP TS-451+-8G-US Intel Celeron 2.0GHz/ 8GB RAM/ 2GbE/ 4SATA3/ USB3.0/ 4-Bay Tower NAS for SOHO & Home
SKU: TS-451--8G-US
Price: $1,225.96
TVS-473E-8G-US QNAP TVS-473E-8G-US AMD R-Series RX-421BD 2.1GHz/ 8GB DDR4/ 4GbE/ 4SATA3/ USB3.0/ 4-Bay Tower NAS Server for SMBs
SKU: TVS-473E-8G-US
Price: $1,819.12
TS-832X-8G-US QNAP TS-832X-8G-US Alpine AL-324 ARM Cortex-A57 1.7GHz/ 8GB DDR4/ 4GbE/ 8SATA3/ USB3.0/ 8-Bay Tower NAS Server for SMB
SKU: TS-832X-8G-US
Price: $1,819.12
TS-873-8G-US QNAP TS-873-8G-US AMD R-Series RX-421ND 2.1GHz/ 8GB DDR4/ 4GbE/ 8SATA3/ USB3.0/ 8-Bay Tower NAS for SMB
SKU: TS-873-8G-US
Price: $2,000.08
LIC-CAM-NAS-2CH QNAP LIC-CAM-NAS-2CH 2 Camera License Activation Key for Surveillance Station Pro
SKU: LIC-CAM-NAS-2CH
Price: $205.26
TS-431P2-4G-US QNAP TS-431P2-4G-US Annapurna Labs AL-314 1.7GHz/ 4GB RAM/ 2GbE/ 4SATA3/ USB3.0/ 4-Bay Desktop NAS for Home & SOHO
SKU: TS-431P2-4G-US
Price: $831.07
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.