Bulk Buyer • Old & Obsolete Cisco • We Handle Logistics

Sell Your Used ISM-SRE-300-K9++

Old, obsolete, low or no value — we buy the Cisco ISM-SRE-300-K9++ (Services Ready Engine 300 (512MB MEM, 4GB Flash, 1C CPU)) in bulk, working or not, and handle the logistics. No testing, no boxing, no cherry picking. The problem disappears.

Get an Offer

ISM-SRE-300-K9++ Lifecycle and Specs

Cisco support for the ISM-SRE-300-K9++ ended on May 31, 2025. 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	ISM-SRE-300-K9++
Cisco description	Services Ready Engine 300 (512MB MEM, 4GB Flash, 1C CPU)
Product family	Cisco 4000 Series Integrated Services Routers ISR
End-of-life announced	November 8, 2019
End of sale	February 7, 2020
Last date of support	May 31, 2025
Cisco replacement	There is currently no replacement produc

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

Upgrading to the There is currently no replacement produc?

Cisco lists the There is currently no replacement produc as the replacement for the ISM-SRE-300-K9++. If you are migrating, send us the ISM-SRE-300-K9++ cards coming out of your chassis. We buy the whole lot, working or not.

Why Sell Your ISM-SRE-300-K9++ 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 ISM-SRE-300-K9++

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

Other Cisco 4000 Series Integrated Services Routers ISR Parts We Buy

ISR4320U-MEM-MSATA Upgrade to 8GB DRAM/8GB Flash, 200GB mSATA SSD bundle
ISR4330U-MEM-MSATA Upgrade to 16GB DRAM/16GB Flash, 200GB mSATA SSD bundle
ISR4350U-MEM-MSATA Upgrade to 16GB DRAM/16GB Flash, 200GB mSATA SSD bundle
ISR4430U-MEM-SSD Upgrade to 16GB DRAM/16GB Flash, 200GB SSD+NIM bundle
ISR4451-UCSE-S/K9 Cisco ISR 4451 CI Bundle w 24 port SM, UCS-E Single Wide SM
ISR4451XWAAS-200G ISRWAAS BUN,DRAM 16GB, Flash Mem 32G, (200+200) GB SSD
MEM-4300-4G 4G DRAM (2G+2G) for Cisco ISR 4330, 4350
MEM180X-128D 128MB SODIMM DRAM for the Cisco 180X
MEM181X-128D 128MB SODIMM DRAM for the Cisco 181X
SI-ISR4351-IWAN/K9 ISR 4351 SEED IT Program Offering
SI-ISR4431-IWAN/K9 ISR 4431 SEED IT Program Offering
SI-ISR4451-IWAN/K9 ISR 4451 SEED IT Program Offering

All Cisco 4000 Series Integrated Services Routers ISR part numbers →