Networking – Transceivers that keep your network running

Small devices that make a big impact. Transceivers are the critical interface between your networking equipment and cabling, and we carry a wide variety for your network.

SFP/SFP+ transceivers

Compact small form-factor pluggable SFP and SFP+ modules are among the most popular on the market: small, high bandwidth (10Gbps for SFP+), scalable, hot-pluggable and backwards compatible.

Reach

Singlemode fiber (SMF) reaches up to 10km. Multimode fiber (MMF) reaches up to 500 meters. Copper reaches up to 100 meters.

Transfer rate

Gigabit Ethernet has long been popular with small and mid-sized businesses, and growing bandwidth needs have driven wide adoption of 10 Gigabit. SFP and SFP+ remain in high demand at both speeds.

Copper vs. fiber

Copper suits short runs and keeps costs low. Fiber suits longer distances and higher performance. The right choice depends on your existing setup and needs.

Transceivers by brand

Pick your platform. Each brand below is available from the catalog.

HP transceivers

SFP form factor, hot-pluggable, low power consumption. Duplex LC or RJ-45 models, highly compatible with HPE products, up to 10km on select SMF models, 1Gbps to 10Gbps.

Dell transceivers

Duplex LC connector, highly compatible with a wide range of Dell servers and NICs, 300m transmission over MMF.

Aruba transceivers

Designed for Aruba switches. Duplex LC or RJ-45 connectors, highly compatible with a wide range of Aruba products.

Best-selling SFP and SFP+ modules

HPE
J4858C X121 SFP

1G, 1000Base-SX, duplex LC, 850nm, MMF, 550m. Refurbished.

HPE
455883-B21 BladeSystem c-Class SFP+

10G, 10GBase-SR, duplex LC, 850nm, MMF. Refurbished.

HPE
J9150A X132 SFP+

10G, 10GBase-SR, duplex LC, 850nm, MMF. Refurbished.

Dell
N743D SFP+

10G, 10GBase-SR, duplex LC, 850nm, MMF. Refurbished.

Dell
RN84N SFP+

10G, 10GBase-LR, duplex LC, 1310nm, SMF. Refurbished.

Dell
GF76J SFP

1G, 1000Base-SX, duplex LC, 850nm, MMF. Refurbished.

Aruba
J4858D SFP

1G, 1000Base-SX, duplex LC, 850nm, MMF, 500m. Refurbished.

Aruba
J9150D SFP+

10G, 10GBase-SR, duplex LC, 850nm, MMF, 300m. Refurbished.

Aruba
J4859D SFP

1G, 1000Base-LX, duplex LC, 1310nm, SMF, 10km. Refurbished.

High-speed 40G and 100G transceivers

As networks move to 40G and 100G, higher-bandwidth modules are required. Choose from Cisco QSFP+ and QSFP28 modules.

High density

Breakout ability increases density: 40G QSFP+ modules break out into 4 x 10G, and 100G QSFP28 modules into 4 x 28G.

Transmission capacity

Extremely high capacity compared to 1G and 10G predecessors.

Interface

LC duplex or MPO/MTP. LC duplex is generally ideal for long runs, and MPO/MTP is an excellent choice for shorter runs.

Cisco 40Gtransceivers

Everything you need to keep a 40G network humming, from short runs to long runs.

What you get
  • 100% Cisco Original or Cisco Compatible
  • Scalable network solution
  • Simplifies network infrastructure
  • Hot pluggable
  • Lifetime Warranty

Shop the full Cisco 40G range at /equipment/transceivers/40-gig/cat-1053/.

Cisco best-selling 40G and 100G transceivers

40G
QSFP-40G-SR-BD

40GBase-SR, LC duplex, 832-918nm, MMF, 150m. Refurbished.

40G
QSFP-40G-SR4

40GBase-SR4, MTP/MPO, 850nm, MMF, 150m. Refurbished.

40G
QSFP-40G-LR4-S

40GBase-LR4, LC duplex, 1310nm SMF, 10km. Refurbished.

40G/100G
QSFP-40/100-SRBD

40/100GBase-SR, duplex LC, 850nm, MMF, 100m. Refurbished.

100G
QSFP-100G-LR4-S

100G QSFP28, duplex LC, 1310nm SMF, 10km. Refurbished.

100G
QSFP-100G-SR4-S

100GBase-SR4, MPO/MTP, 850nm, MMF, 100m. Refurbished.

Why choose CK fortransceivers?

You won't find a better partner for adding value to your IT infrastructure.

The CK difference
  • Wide selection: transceivers from various brands
  • Cost savings: refurbished transceivers that function just like new
  • Industry-best Lifetime Warranty on every transceiver
  • Custom packaging so units are protected in shipping
  • Fast shipping: in-stock orders ship the same day until 6PM ET

Request a transceiver quote

Tell us what you need and we will respond quickly.

Why quote with CK
  • Lifetime Warranty
  • Same-day shipping until 6PM ET
  • Wide selection across brands

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