Replacement for X7903A: Drop-In Alternatives We Stock
Looking for a replacement for the X7903A (X7903A - Sun 23-inch 2-Post Rack-Mountable Kit)? 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 X7903A
| SKU | X7903A |
|---|---|
| Product | X7903A - Sun 23-inch 2-Post Rack-Mountable Kit |
| Stock status | In Stock |
| Detail page | View X7903A › |
Drop-in replacements for X7903A
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.
01-SSC-2231 - SonicWall 2-Post 1000Base-X Network Security Appliance
SKU: 01-SSC-2231
Price: $1,632.21
223-5536 - Dell PowerConnect 3500 Series 3548 48 x Ports 10/100Base-T + 2 x Ports Gigabit SFP + 2 x Ports 10/100/1000Base-T Fast Ethernet Rack-Mountable 1U Stackable Layer 3 Managed Network Switch
SKU: 223-5536
Price: $131.58
HP JG236-61101-B 5120 Series 5120-24G-PoE+ 24 x RJ-45 Ports PoE+ 10/100/1000Base-T + 4 x Shared SFP Ports Layer 3 Managed 1U Rack-mountable Gigabit Ethernet Network EI Switch
SKU: JG236-61101-B
Price: $138.95
HP JG236-61201 5120 Series 5120-24G-PoE+ 24 x RJ-45 Ports PoE+ 10/100/1000Base-T + 4 x Shared SFP Ports Layer 3 Managed 1U Rack-mountable Gigabit Ethernet Network EI Switch
SKU: JG236-61201
Price: $138.95
HP JG237-61101-B ProCurve 5120 Series 5120-48G-PoE+ 44 x Ports PoE+ 10/100/1000Base-T + 4 x Ports PoE+ Dual-Personality RJ-45/SFP 2 x Expansion Slots Layer 3 Managed 1U Rack-Mountable Gigabit Ethernet
SKU: JG237-61101-B
Price: $145.26
HP JG237-61001-B ProCurve 5120 Series 5120-48G-PoE+ 44 x Ports PoE+ 10/100/1000Base-T + 4 x Ports PoE+ Dual-Personality RJ-45/SFP 2 x Expansion Slots Layer 3 Managed 1U Rack-Mountable Gigabit Ethernet
SKU: JG237-61001-B
Price: $145.26
EX2300-24P - Juniper 24-Port 10/100/1000 (PoE+) Managed Layer-3 Gigabit Ethernet Switch Rack-Mountable
SKU: EX2300-24P
Price: $184.21
JH323A - HP FlexNetwork 5130 24-Port 24 x 10/100/1000 + 4 x 10G SFP+ Rack-mountable Manage Switch
SKU: JH323A
Price: $205.26
JH323-61001 - HP FlexNetwork 5130 24-Port 24 x 10/100/1000 + 4 x 10G SFP+ Rack-mountable Manage Switch
SKU: JH323-61001
Price: $205.26
223100-001 - HP RA4000 Rack-Mountable Fibre Channel Storage Enclosure Array
SKU: 223100-001
Price: $294.74
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.