Alternative to TR-004-US: Better-Value Equivalents in Stock
Comparing the TR-004-US (TR-004-US QNAP TR-004-US SATA2 4-Bay Tower RAID Expansion Enclosure for both NAS and Computers) against alternatives? Pro Disk Network stocks 12 similar parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
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 › |
Alternatives to 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 alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.