Bulk Buyer • Old & Obsolete Cisco • We Handle Logistics

Sell Your Used NCS4K-20T-O-S

Old, obsolete, low or no value — we buy the Cisco NCS4K-20T-O-S (NCS 4000 20x10G OTN Card - SFP+) in bulk, working or not, and handle the logistics. No testing, no boxing, no cherry picking. The problem disappears.

Get an Offer

NCS4K-20T-O-S Lifecycle and Specs

Cisco support for the NCS4K-20T-O-S ended on January 31, 2022. Hardware past its last date of support can no longer be covered by a Cisco service contract, which is usually when organizations retire it.

Part number	NCS4K-20T-O-S
Cisco description	NCS 4000 20x10G OTN Card - SFP+
Product family	Cisco NCS Network Convergence System
End-of-life announced	January 28, 2016
End of sale	January 27, 2017
Last date of support	January 31, 2022
Cisco replacement	NCS4K-2H10T-OP-KS — NCS 4000 2x 100G CPAK 10x10G SFP+ OTN/Packet Line Card

Dates and descriptions from Cisco’s end-of-sale and end-of-life announcement.

Upgrading to the NCS4K-2H10T-OP-KS?

Cisco lists the NCS4K-2H10T-OP-KS (NCS 4000 2x 100G CPAK 10x10G SFP+ OTN/Packet Line Card) as the replacement for the NCS4K-20T-O-S. If you are migrating, send us the NCS4K-20T-O-S cards coming out of your chassis. We buy the whole lot, working or not.

Why Sell Your NCS4K-20T-O-S to Us

We make the problem disappear — we handle the logistics
We buy in bulk — no cherry picking
Old, obsolete, low or no value — working or not
No special prep — just stack in gaylords/pallets
Fast payments — clear terms and quick POs

Get an Offer for Your NCS4K-20T-O-S

Paste your list or upload a file. Part numbers and quantities are all we need to start.

Other Cisco NCS Network Convergence System Parts We Buy

NC55-RP NCS 5500 Route Processor
NC6-10X100G-L-K NCS 6000 10x100G LSR CPAK Spare
NC6-FC NCS 6008 Fabric Card Spare
NCS2015-SYS-AC++ NCS 2015 AC power System Assembly to Order - TAA
NCS2015-SYS-DC++ NCS 2015 DC power System Assembly to Order - TAA
NCS2K-100G-CK-C 100G CPAK Multi-Rate Line Card - CP-DQPSK - C-Band
NCS2K-100GS-CK-C 100G - CPAK Multi-Rate Line Card -SD FEC - C-Band
NCS2K-100GS-CKC++ 100G - CPAK Multi-Rate Line Card -SD FEC - C-Band
NCS2K-100ME-CKC 100G CPAK Multi-Rate Line Card - CP-DQPSK - Metro - C-Band
NCS2K-16-WXC-FS 16-ports Wavelength X-Connect and Mux/Demux - Flex Spectrum
NCS2K-200G-CK-C++ 50G/100G/200G CPAK Multi-Rate Line Card - SD FEC - C-Band
NCS2K-400G-XP++ 400G CFP2 MR Xponder - TAA

All Cisco NCS Network Convergence System part numbers →