Replacement for UNCN2-300USR-K9: Drop-In Alternatives We Stock
Looking for a replacement for the UNCN2-300USR-K9 (Cisco UNCN2-300USR-K9 Unity Licence Standard 16 Port, 300 User, 10 Seat)? 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 UNCN2-300USR-K9
| SKU | UNCN2-300USR-K9 |
|---|---|
| Product | Cisco UNCN2-300USR-K9 Unity Licence Standard 16 Port, 300 User, 10 Seat |
| Stock status | In Stock |
| Detail page | View UNCN2-300USR-K9 › |
Drop-in replacements for UNCN2-300USR-K9
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.
73-1688-04 - Cisco Catalyst 1-Port Fast Ethernet 100BASETX Port Adapter
SKU: 73-1688-04
Price: $235.79
MCS7816H3-K9-CMB2 - Cisco MCS 7816-H3 1U Rack Server 1 x Celeron D 352 3.20 GHz 1 Processor 2 GB Standard/8 GB Maximum RAM 160 GB HDD 420 W
SKU: MCS7816H3-K9-CMB2
Price: $1,985.07
Cisco HDD-7816-I4-250 HDD-7816-I4-250= 250 GB 3.5 Internal Hard Drive - SATA/300 - 7200 rpm - Hot Swappable
SKU: HDD-7816-I4-250
Price: $371.63
15454-OC48E-47.72 - Cisco 15454 2.4Gb/s OC-48/STM-16 Multi-Mode 1 x Port SC Connector SFP (mini-GBIC) Sonet/SDH Module
SKU: 15454-OC48E-47.72
Price: $326.00
15454-OC48E-42.94 - Cisco 15454 2.4Gb/s OC-48/STM-16 Multi-Mode 1 x Port SC Connector Fiber Module
SKU: 15454-OC48E-42.94
Price: $326.00
15454-OC48E-35.04 - Cisco 15454 2.4Gb/s OC-48/STM-16 Multi-Mode 1 x Port SC Connector Fiber Module
SKU: 15454-OC48E-35.04
Price: $374.59
APIC-PCIE-C10T-02 - Cisco UCS 2-Port PCI Express 2.0 x16 Virtual Interface Card
SKU: APIC-PCIE-C10T-02
Price: $733.58
UCSC-PCIE-Q2672 - Cisco SANBlade 2-Port 16GB Fiber Channel PCI Express Host Bus Adapter
SKU: UCSC-PCIE-Q2672
Price: $1,162.16
QLE2672-CSC - Cisco SANBlade 2-Port 16GB Fiber Channel PCI Express Host Bus Adapter
SKU: QLE2672-CSC
Price: $1,162.16
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.