Replacement for WS-C4503-S2-48: Drop-In Alternatives We Stock
Looking for a replacement for the WS-C4503-S2-48 (WS-C4503-S2-48 - Cisco Catalyst 4503 3-Port Supervisor Engine 2 x Line Card Switch Chassis)? Pro Disk Network ships Cisco 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 WS-C4503-S2-48
| SKU | WS-C4503-S2-48 |
|---|---|
| Product | WS-C4503-S2-48 - Cisco Catalyst 4503 3-Port Supervisor Engine 2 x Line Card Switch Chassis |
| Stock status | In Stock |
| Detail page | View WS-C4503-S2-48 › |
Drop-in replacements for WS-C4503-S2-48
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.
C9400-LC-48UX - Cisco Catalyst 9400 UPoE 24 10/100/1000Base-T Plug-in Module Line Cards Expansion Module
SKU: C9400-LC-48UX
Price: $4,937.50
C9400-LC-48P - Cisco Catalyst 9400 UPoE 24 10/100/1000Base-T Plug-in Module Line Cards Expansion Module
SKU: C9400-LC-48P
Price: $5,183.61
WS-X4548-GB-RJ45 - Cisco Catalyst 4500 48-Port 10/100/1000BASE-T Inline Card
SKU: WS-X4548-GB-RJ45
Price: $79.66
73-14658-02 - Cisco 4-Port 10Gb/s LAN Expansion Module for Catalyst C3850-12X48U-E Switch
SKU: 73-14658-02
Price: $99.93
WS-X4448-GB-RJ45 - Cisco Catalyst 4000 48-Port 48 x 10/100/1000Base-T + 1 x Expansion Slot Gigabit Ethernet Module
SKU: WS-X4448-GB-RJ45
Price: $120.92
WS-X6548-GE-TX - Cisco Catalyst 6500 48-Port 48 x 10/100/1000 Base-T Layer 3 Managed Fabric-Enabled Module
SKU: WS-X6548-GE-TX
Price: $125.80
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.