Replacement for SG500-28-K9-AU: Drop-In Alternatives We Stock
Looking for a replacement for the SG500-28-K9-AU (SG500-28-K9-AU - Cisco Network Switch)? 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 SG500-28-K9-AU
| SKU | SG500-28-K9-AU |
|---|---|
| Product | SG500-28-K9-AU - Cisco Network Switch |
| Stock status | In Stock |
| Detail page | View SG500-28-K9-AU › |
Drop-in replacements for SG500-28-K9-AU
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.
39Y9281 - IBM Cisco System s 10 Port Fibre Channel Switch Module for IBM BladeCenter - Switch 7-Ports 4GB Fibre Channel 3 X SFP (EMPTY) - PLUG
SKU: 39Y9281
Price: $220.05
39Y9282 - IBM CISCO SystemS 10 -Port Fibre Channel Switch Module for IBM BladeCenter - Switch - 7 Ports - 4GB Fibre Channel 3 X SFP (EMPTY)
SKU: 39Y9282
Price: $233.68
CAB-AC-2800W-INT - Cisco 10ft AC Power Cord for Cisco Catalyst 4500 Series Switch
SKU: CAB-AC-2800W-INT
Price: $147.86
2-409-774-12 - Cisco 2800-Watts 200-240V Power Supply For Catalyst 4500 Series Switch
SKU: 2-409-774-12
Price: $121.30
800-28993-01 - Cisco 1150-Watts Power Supply For Catalyst 3560-E / 3750-E Series Switch
SKU: 800-28993-01
Price: $268.16
PWR-C45-2800AC - Cisco 2800-Watts AC Power Supply for Catalyst 4500 Series Switch
SKU: PWR-C45-2800AC
Price: $405.26
SG300-28P - Cisco Small Business 300 Series RJ-45 PoE+ 28 x Ports 10/100/1000Base-T + 2 x combo Gigabit SFP Layer 3 Managed Desktop Rack Mountable 1U Gigabit Ethernet Switch
SKU: SG300-28P
Price: $869.47
MEM2800128CFAPPROVED - Cisco 128MB CompactFlash (CF) Memory Card for Cisco 2800 Series
SKU: MEM2800128CFAPPROVED
Price: $116.33
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.