Alternative to WS-C4503: Better-Value Equivalents in Stock
Comparing the WS-C4503 (WS-C4503 - Cisco Catalyst 4503 3-Port Supervisor Engine 2 x Line Card Switch Chassis) against alternatives? Pro Disk Network stocks 12 similar Cisco 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 WS-C4503
| SKU | WS-C4503 |
|---|---|
| Product | WS-C4503 - Cisco Catalyst 4503 3-Port Supervisor Engine 2 x Line Card Switch Chassis |
| Stock status | In Stock |
| Detail page | View WS-C4503 › |
Alternatives to WS-C4503
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.
WS-C4507R-E-RF - Cisco Catalyst 4500 7-Slot Line Card/Supervisor Engine Layer 4 Managed Rack-mountable Switch Chassis
SKU: WS-C4507R-E-RF
Price: $5,875.80
Cisco Line Card Classic - Switch - 6 x 10/100/1000 (PoE) + 6 x shared SFP - plug-in module - refurbished for Catalyst 4503, 4506, 4507R, 4510R
SKU: WS-X4506-GB-T-RF
Price: $1,720.49
WS-U5533-FEFX-MMF - Cisco Catalyst 2-Port 100Base-FX MMF Uplink Supervisor Engine III
SKU: WS-U5533-FEFX-MMF
Price: $368.42
VS-S720-10G-3CXL - Cisco Catalyst 6500 Series 2-Port Virtual Switching Supervisor Engine
SKU: VS-S720-10G-3CXL
Price: $1,416.26
MEMC6KATA164MB - Cisco 164MB ATA Type I Flash Memory Card for Catalyst 6500 Series Supervisor Engine 2
SKU: MEMC6KATA164MB
Price: $116.33
MEM-C6K-FLC24M - Cisco 24MB Flash Memory Card for Catalyst 6000 PCCARD Supervisor ENGINE 1
SKU: MEM-C6K-FLC24M
Price: $197.53
MEM-C6K-ATA-1-64M-TP - Cisco 64MB PCMCIA ATA Flash Memory for Catalyst 6000 / 6500 Supervisor Engine II Series
SKU: MEM-C6K-ATA-1-64M-TP
Price: $116.33
MEM-C6K-ATA-1-64M-AP - Cisco 64MB PCMCIA ATA Flash Memory for Catalyst 6000 / 6500 Supervisor Engine II Series
SKU: MEM-C6K-ATA-1-64M-AP
Price: $116.33
WS-X4515 - Cisco Catalyst 4500 Supervisor Engine IV Control Processor 2 Gigabit Ethernet Console
SKU: WS-X4515
Price: $150.71
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.