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Keystron, LLC is established in June, 2007. We started our business by manufacturing memory modules for PCs, laptops, printers and routers and selling the products online. Over the years we have expanded our manufacture process and product offers to include optical transceivers for network connectivity. We resell many named brand products and also offer our own brand memory and optical transceivers at a much more affordable prices.
Keystron Store
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Intel E10GSFPSR Ethernet SFP+ SR Optics
(5)Intel
Intel E10GSFPSR Ethernet SFP+ SR Optics
  • Brand: Intel
  • Model: E10GSFPSR
  • Device Type: Transceiver
  • Feature: Dual Rate 10GBASE-SR/ 1000BASE-SX Compatibility : Intel Ethernet Server Adapter X520 Series
  • Model #: E10GSFPSR
  • Return Policy: View Return Policy
Save 11%
$13.19
$14.95
Free Shipping
FINISAR CORPORATION FTLF1318P3BTL 1310NM FP, GIGE, 1X FC, 1.25 GB/S TRANSC
FINISAR CORPORATION FTLF1318P3BTL 1310NM FP, GIGE, 1X FC, 1.25 GB/S TRANSC
$39.86
Free Shipping
Cisco Meraki MA-SFP-1GB-SX Compatible 1000BASE-SX SFP 850nm 550m DOM
Cisco Meraki MA-SFP-1GB-SX Compatible 1000BASE-SX SFP 850nm 550m DOM
  • Device Type: Transceiver
  • Model #: PTNO-19C-0048
  • Item #: 9SIAUSYGAU1331
  • Return Policy: View Return Policy
$9.95
Free Shipping
  • $9.15 - $9.95
Mellanox MFM1T02A-SR SFP+ Optical Module for 10GBASE-SR
Mellanox MFM1T02A-SR SFP+ Optical Module for 10GBASE-SR
$15.00
Free Shipping
Finisar Industrial Temperature 1.25 Gb/s RoHS Compliant Long-Wavelength Pluggable SFP Transceiver
Finisar Accessories
  • Type: SFP (mini-GBIC)
  • Specifications: 1 x 1000Base-LX
  • Model #: FTLF1318P3BTL
  • Return Policy: View Return Policy
Save 22%
$35.00
$45.00
Free Shipping
FINISARFinisar Ftlx8571D3Bcv-It Finisar 1G 10G Dual Rate Sfp Fiber Optical Transceiver Module
FINISARFinisar Ftlx8571D3Bcv-It Finisar 1G 10G Dual Rate Sfp Fiber Optical Transceiver Module
  • Device Type: Transceiver
  • Wavelength: 850nm
  • Protocols: HCRP, SPP
  • Ports: LC duplex
  • Model #: FTLX8571D3BCV-IT
  • Return Policy: View Return Policy
$25.94
Free Shipping
New Dell FTLX8574D3BCL 10GBASE-SR 850nm SFP+ Transceiver Module C5RNH CN-0C5RNH
DELL
New Dell FTLX8574D3BCL 10GBASE-SR 850nm SFP+ Transceiver Module C5RNH CN-0C5RNH
$14.49
Free Shipping
Dell 407-BBOS Networking, Transceiver, SFP, 1000BASE-T - Kit
DELL
Dell 407-BBOS Networking, Transceiver, SFP, 1000BASE-T - Kit
  • Device Type: Transceiver
  • Protocols: HCRP, SPP
  • Weight: 0.1
  • Model #: 407-BBOS
  • Return Policy: View Return Policy
$59.99
Free Shipping
FINISAR CORPORATION FTLF8519P3BTL 850NM OXIDE VCSEL, GIGE, 1X/2X FC, 2.125
FINISAR CORPORATION FTLF8519P3BTL 850NM OXIDE VCSEL, GIGE, 1X/2X FC, 2.125
$32.99
Free Shipping
  • $30.35 - $32.99
Genuine Brocade 57-0000076-01 10GE 10km 1310nm SFP+ 10G-SFPP-LR 10GBE Tranceiver
Refurbished: Genuine Brocade 57-0000076-01 10GE 10km 1310nm SFP+ 10G-SFPP-LR 10GBE Tranceiver
$29.90
Free Shipping
Finisar FTLF8519P3BNL 1000BASE-SX 2.125Gb/s 850nm LC Connector SFP Transceiver
Finisar FTLF8519P3BNL 1000BASE-SX 2.125Gb/s 850nm LC Connector SFP Transceiver
$19.94
Free Shipping
Cisco 2821 512MB Memory Module: MEM2821-512D
SAMSUNG
Cisco 2821 512MB Memory Module: MEM2821-512D
$14.00
Free Shipping
  • $12.88 - $14.00
Intel E10GSFPLR Dual Rate 10GBASE-LR SFP+ Module
Intel
Intel E10GSFPLR Dual Rate 10GBASE-LR SFP+ Module
$29.99
Free Shipping
Finisar FTLX1471D3BCL 10 GbE SR Multi-Mode SFP+ Transceiver
Finisar FTLX1471D3BCL 10 GbE SR Multi-Mode SFP+ Transceiver
  • Device Type: Transceiver
  • Wavelength: 1310nm
  • Protocols: 10x Fibre Channel Compliant 10 Gigabit Ethernet Compliant Wireless CPRI Compliant
  • Ports: LC
  • Model #: FTLX1471D3BCL
  • Return Policy: View Return Policy
Save 25%
$22.99
$31.00
Free Shipping
OEM Finisar Transceivers FTLX1471D3BCL SFP 10GBase LR 10Km 1310nm
OEM Finisar Transceivers FTLX1471D3BCL SFP 10GBase LR 10Km 1310nm
  • Device Type: Transceiver
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: FTLX1471D3BCL-N1
  • Return Policy: View Return Policy
$29.94
Free Shipping
Cisco Meraki Compatible MA-SFP-10GB-SR 10GBASE-SR SFP+ 850nm 300m Transceiver
Cisco Meraki Compatible MA-SFP-10GB-SR 10GBASE-SR SFP+ 850nm 300m Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0645
  • Item #: 9SIAUSYGAU1681
  • Return Policy: View Return Policy
$13.95
  • $12.07 - $13.95
INTEL FTLX8571D3BCV-IT Finisar 10GB/s 850nm Multimode SFP+SR Transceiver,H
Intel
INTEL FTLX8571D3BCV-IT Finisar 10GB/s 850nm Multimode SFP+SR Transceiver,H
$19.89
Free Shipping
Finisar FCLF8522P2BTL 1000BASE-T RoHS Compliant Copper SFP Transceiver
Finisar FCLF8522P2BTL 1000BASE-T RoHS Compliant Copper SFP Transceiver
  • Device Type: Transceiver
  • Ports: RJ-45
  • Max Distance: 100 m
  • Transfer Rate: 1.25 Gbps
  • Model #: FCLF8522P2BTL
  • Return Policy: View Return Policy
Save 51%
$32.59
$67.26
Free Shipping
Intel E10GSFPLR 10Gbps Dual Rate 10GBASE-LR SFP+ Module
Intel
Intel E10GSFPLR Dual Rate 10GBASE-LR SFP+ Module
  • Connectors: 1 x 10GBase-LR
  • Weight: 0.1
  • Parts: Lifetime limited
  • Labor: Lifetime limited
  • Model #: E10GSFPLR
  • Return Policy: View Return Policy
$25.99
Free Shipping
Finisar FCLF8521P2BTL 1000BASE-T RoHS Compliant Copper SFP Transceiver
Finisar FCLF8521P2BTL 1000BASE-T RoHS Compliant Copper SFP Transceiver
  • Device Type: Transceiver
  • Ports: RJ-45
  • Transfer Rate: 1.25 Gbps
  • Model #: FCLF8521P2BTL
  • Return Policy: View Return Policy
$24.89
Free Shipping
Finisar 10Gb/s 850nm Multimode Datacom SFP+ Tranceiver
(1)
Finisar FTLX8571D3BCL 10Gb/s 850nm Multimode Datacom SFP+ Transceiver
  • Type: XFP
  • Specifications: Form Factor: SFP+ Distance: 300 m Protocol: 10 Gb/s Fibre Channel Compliant, 10 Gigabit Ethernet Compliant Data Rate (max): 10.5 Gb/s Low End Case Temperature (°C): 0°C High End Case Temperature (°C): 70°C Diagnostics: Digital Transmitter: VCSEL Receiver: PIN Voltage Supply: 3.3 Connector: LC
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: FTLX8571D3BCL
  • Return Policy: View Return Policy
$16.19
Free Shipping
Finisar 10Gb/s 10km 1310nm Single Mode Datacom SFP+ Optical Transceiver
Finisar 10Gb/s 10km 1310nm Single Mode Datacom SFP+ Optical Transceiver
Save 45%
$62.95
$116.12
Free Shipping
Chelsio SM10G-SR 10GBase-SR XFP Module
Chelsio SM10G-SR 10GBase-SR XFP Module
  • Type: XFP
  • Specifications: Interfaces/Ports: 1 x 10GBase-SR Interfaces/Ports Details: 1 x LC Duplex 10GBase-SR Connectivity Media: Multi-mode Optical Fiber 10GBase-SR Data Transfer Rate: 10 Gbps Gigabit Ethernet Compatibility: Cheliso N320E Server Adapter
  • Model #: SM10G-SR
  • Return Policy: View Return Policy
Save 17%
$27.52
$33.21
Free Shipping
  • $25.32 - $27.52
Dell Intel SFP+ Module
DELL
Dell Intel SFP+ Module
  • Type: SFP+
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 407-BBVJ
  • Return Policy: View Return Policy
$23.08
Free Shipping
Finisar 1000Base-SX SFP Transceiver Module
Finisar Accessories
  • Type: SFP
  • Specifications: 1 x 1000Base-SX
  • Model #: FTLF8519P2BNL
  • Return Policy: View Return Policy
$23.95
Free Shipping
850NM OXIDE VCSEL, GIGE, 1X/2X FC, 2.125FTLF8519P3BNL
850NM OXIDE VCSEL, GIGE, 1X/2X FC, 2.125FTLF8519P3BNL
  • Device Type: Transceiver
  • Protocols: Optical Gigabit Ethernet Compliant 1 Gb/s Fibre Channel Compliant 2 Gb/s Fibre Channel Compliant
  • Ports: LC
  • Transfer Rate: 2.125 Gb/s
  • Model #: FTLF8519P3BNL
  • Return Policy: View Return Policy
Save 35%
$19.49
$30.00
Free Shipping
Finisar 1GFC/2GFC/GE 850nm -20 to 85C SFP Transceiver FTLF8519P3BNL
Finisar 1GFC/2GFC/GE 850nm -20 to 85C SFP Transceiver FTLF8519P3BNL
Save 35%
$19.29
$30.00
Free Shipping
Dell EMC SFP+ Module
DELL
Dell EMC SFP+ Module
$49.00
Free Shipping
Finisar FTLX1471D3BCV SFP+ Module
Finisar Accessories
  • Type: SFP+
  • Specifications: 1 x 10GBase-X
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: FTLX1471D3BCV
  • Return Policy: View Return Policy
$48.68
Free Shipping
  • $44.79 - $48.68
Dell SFP plus Transceiver Module - 407-BBOU Adapter
DELL
Dell SFP plus Transceiver Module - 407-BBOU Adapter
  • Device Type: Transceiver
  • Protocols: HCRP, SPP
  • Weight: 0.31
  • Model #: 407-BBOU
  • Return Policy: View Return Policy
Save 58%
$12.01
$28.92
Free Shipping
Finisar FTLX8571D3BCL 10GBASE-SR/SW SFP+ 300m 850nm Multimode SFP+ Transceiver
Finisar FTLX8571D3BCL 10GBASE-SR/SW SFP+ 300m 850nm Multimode SFP+ Transceiver
$19.50
Free Shipping
Dell 407-BBVJ HN12K Dell Intel SFP+SR 10Gb-1Gb transceiver.
DELL
Dell 407-BBVJ HN12K Dell Intel SFP+SR 10Gb-1Gb transceiver.
$20.97
Free Shipping
SanDisk SDCFS-256-A99 256mb Shoot and Store Compactflash Card
SanDisk
SanDisk SDCFS-256-A99 256mb Shoot and Store Compactflash Card
$32.71
Free Shipping
  • $30.09 - $32.71
NEW Cisco Compatible SFP-10G-SR 10Gb SFP+ Transceiver 850nm LIFETIME WARRANTY
NEW Cisco Compatible SFP-10G-SR 10Gb SFP+ Transceiver 850nm LIFETIME WARRANTY
  • Device Type: Transceiver
  • Model #: PTNO-19C-0628
  • Item #: 9SIAUSYGAU1661
  • Return Policy: View Return Policy
$9.50
Free Shipping
  • $8.74 - $9.50
Dell SFP Transceiver Module 407-BBOO Transceiver Module
DELL
Dell SFP Transceiver Module 407-BBOO Transceiver Module
  • Device Type: Transceiver
  • Parts: 30 DAYS WARRANTY
  • Labor: 30 DAYS WARRANTY
  • Model #: 407-BBOO
  • Return Policy: View Return Policy
$99.99
Free Shipping
HIRSCHMANN M-FAST SFP-SM/LC Compatible 943 866-001 100BASE-SM SMF Transceiver
HIRSCHMANN M-FAST SFP-SM/LC Compatible 943 866-001 100BASE-SM SMF Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0108
  • Item #: 9SIAUSYGAU1333
  • Return Policy: View Return Policy
$68.25
Free Shipping
  • $62.79 - $68.25
J4858D 1G SFP LC SX 500m MMF XCVR HP and Aruba Compatible Lifetime Warranty
J4858D 1G SFP LC SX 500m MMF XCVR HP and Aruba Compatible Lifetime Warranty
  • Device Type: Transceiver
  • Model #: PTNO-19C-0569
  • Item #: 9SIAUSYGAU1639
  • Return Policy: View Return Policy
$12.17
Free Shipping
  • $11.20 - $12.17
Palo Alto Networks Compatible PAN-SFP-CG - 1000BASE-T SFP Transceiver PA-7000
Palo Alto Networks Compatible PAN-SFP-CG - 1000BASE-T SFP Transceiver PA-7000
  • Device Type: Transceiver
  • Model #: PTNO-19C-0010
  • Item #: 9SIAUSYGAU1265
  • Return Policy: View Return Policy
$17.85
Free Shipping
  • $16.42 - $17.85
Ubiquiti Networks Compatible UF-MM-1G SFP Multi-Mode Fiber Module (2-Pack)
Ubiquiti Networks Compatible UF-MM-1G SFP Multi-Mode Fiber Module (2-Pack)
  • Device Type: Transceiver
  • Model #: PTNO-19C-0176
  • Item #: 9SIAUSYGAU1307
  • Return Policy: View Return Policy
$13.42
Free Shipping
  • $12.35 - $13.42
F5 Networks Compatible 10G F5-UPG-SFP+LR-R SFP+ SMF 1310nm 10km OPT-0017-00
F5 Networks Compatible 10G F5-UPG-SFP+LR-R SFP+ SMF 1310nm 10km OPT-0017-00
  • Device Type: Transceiver
  • Model #: PTNO-19C-0131
  • Item #: 9SIAUSYGAU1275
  • Return Policy: View Return Policy
$33.60
Free Shipping
  • $30.91 - $33.60
HIRSCHMANN M-SFP-LX/LC Compatible 943 015-001 1000BASE-LX 20km SMF Transceiver
HIRSCHMANN M-SFP-LX/LC Compatible 943 015-001 1000BASE-LX 20km SMF Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0105
  • Item #: 9SIAUSYGAU1321
  • Return Policy: View Return Policy
$13.95
Free Shipping
  • $12.83 - $13.95
DELL 407-BBOP network transceiver module
DELL
DELL 407-BBOP network transceiver module
  • Device Type: Transceiver
  • Parts: 30 days warranty
  • Labor: 30 days warranty
  • Model #: 407-BBOP
  • Return Policy: View Return Policy
$60.89
Free Shipping
Cisco Compatible SFP-10G-SR-S 850nm Transceiver 400m on OM4 MMF
Cisco Compatible SFP-10G-SR-S 850nm Transceiver 400m on OM4 MMF
  • Device Type: Transceiver
  • Model #: PTNO-19C-0626
  • Item #: 9SIAUSYGAU1630
  • Return Policy: View Return Policy
$10.00
Free Shipping
  • $9.20 - $10.00
MGBSX1 Cisco Linksys Compatible 1000BASE-SX 850nm 550m SFP Transceiver
MGBSX1 Cisco Linksys Compatible 1000BASE-SX 850nm 550m SFP Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0035
  • Item #: 9SIAUSYGAU1301
  • Return Policy: View Return Policy
$13.12
Free Shipping
  • $12.07 - $13.12
TP-Link Compatible TXM431-SR 10GBASE-SR 300m 850nm SFP+ Transceiver
TP-Link Compatible TXM431-SR 10GBASE-SR 300m 850nm SFP+ Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0163
  • Item #: 9SIAUSYGAU1279
  • Return Policy: View Return Policy
$25.79
Free Shipping
  • $23.73 - $25.79
ARISTA Compatible SFP-10G-LRL - 10GBASE-LRL SFP+ Optics Module 1310nm 1km SMF
ARISTA Compatible SFP-10G-LRL - 10GBASE-LRL SFP+ Optics Module 1310nm 1km SMF
  • Device Type: Transceiver
  • Model #: PTNO-19C-0134
  • Item #: 9SIAUSYGAU1310
  • Return Policy: View Return Policy
$19.95
Free Shipping
  • $18.35 - $19.95
Mellanox Compatible MC3208011-LX 1000BASE-LX SFP 1310nm 10km/20km Transceiver
Mellanox Compatible MC3208011-LX 1000BASE-LX SFP 1310nm 10km/20km Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0504
  • Item #: 9SIAUSYGAU1328
  • Return Policy: View Return Policy
$30.45
Free Shipping
  • $28.01 - $30.45
Linksys Compatible MGBLX1 - 1000BASE-LX SMF 1310nm 10KM SFP Transceiver
Linksys Compatible MGBLX1 - 1000BASE-LX SMF 1310nm 10KM SFP Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0036
  • Item #: 9SIAUSYGAU1311
  • Return Policy: View Return Policy
$14.96
Free Shipping
  • $13.76 - $14.96
NETGEAR AGM734 Compatible 1000Base-T RJ-45 Copper SFP Transceiver
NETGEAR AGM734 Compatible 1000Base-T RJ-45 Copper SFP Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0516
  • Item #: 9SIAUSYGAU1499
  • Return Policy: View Return Policy
$25.51
Free Shipping
  • $23.47 - $25.51
S-31DLC20D MikroTik Compatible 1000Base-LX 20KM SFP Transceiver module 1310nm
S-31DLC20D MikroTik Compatible 1000Base-LX 20KM SFP Transceiver module 1310nm
  • Device Type: Transceiver
  • Model #: PTNO-19C-0527
  • Item #: 9SIAUSYGAU3980
  • Return Policy: View Return Policy
$15.52
Free Shipping
  • $11.52 - $15.52
Finisar FTLX8571D3BCL 10GBASE-SR/SW SFP+ Transceivers
Finisar FTLX8571D3BCL 10GBASE-SR/SW SFP+ Transceivers
$14.47
Free Shipping
Compatible Fortinet FG-TRAN-SFP+SR FN SFP-10G-SR FTLX8574D3BCL 850nm MMF 10GBE
Compatible Fortinet FG-TRAN-SFP+SR FN SFP-10G-SR FTLX8574D3BCL 850nm MMF 10GBE
  • Device Type: Transceiver
  • Model #: PTNO-19C-0498
  • Item #: 9SIAUSYGAU1320
  • Return Policy: View Return Policy
$10.50
Free Shipping
  • $9.66 - $10.50
QNAP TRX-10GSFP-SR-MLX Mellanox MFM1T02A-SR 10GbE Transceiver
QNAP TRX-10GSFP-SR-MLX Mellanox MFM1T02A-SR 10GbE Transceiver
  • Type: Accessory
  • Model #: QN#TRX10GSFPSRMLX
  • Item #: 9SIAUSYFPR2125
  • Return Policy: View Return Policy
$155.73
Free Shipping
  • $143.27 - $155.73
Mikrotik S+85DLC03D Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver
Mikrotik S+85DLC03D Compatible 10GBASE-SR SFP+ 850nm 300m DOM Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0556
  • Item #: 9SIAUSYGAU1571
  • Return Policy: View Return Policy
$13.10
Free Shipping
  • $12.05 - $13.10
D-Link Compatible DEM-431XT - 10GBASE-SR 300m 850nm SFP+ Transceiver
D-Link Compatible DEM-431XT - 10GBASE-SR 300m 850nm SFP+ Transceiver
  • Device Type: Transceiver
  • Model #: PTNO-19C-0606
  • Item #: 9SIAUSYGAU1484
  • Return Policy: View Return Policy
$17.32
Free Shipping
  • $15.93 - $17.32
Dell Compatible 407-BBZM 49TNY Transceiver SFP+ 10 GbE SR 850nm MMF 300 m reach
Dell Compatible 407-BBZM 49TNY Transceiver SFP+ 10 GbE SR 850nm MMF 300 m reach
  • Device Type: Transceiver
  • Model #: PTNO-19C-0535
  • Item #: 9SIAUSYGAU1341
  • Return Policy: View Return Policy
$9.40
Free Shipping
  • $8.65 - $9.40
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