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1-25G SFP 1000Base-SX- 850nm- 550-meter SFP

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  • 1-25G SFP 1000Base-SX- 850nm- 550-meter SFP
  • SFP-GE-S

1.25G SFP 1000Base-SX, 850nm, 550-meter SFP | SFP-GE-S

SKU: ASF85-24-X2-D SKU1: ASF85-24-X2-D

Availability: In stock

  • Buy 20 for $7.06 each and save 4%
Volume Price: Inquire
  • Model: ASF85-24-X2-D
  • CPN: ASF85-24-X2-D
  • Lsku: T1G85--55-1-X
● 1000Base-SX
● Data Rate:  1.25Gb/s
● Wavelength:  850-nm
● Reach:  550-meter @OM3 MMF Cable
● Fiber Type:  Multi-mode
● Interface:  Dual LC Connectors

● 10Gtek offer Compatible Service

To work with following brands, please choose Cisco/OEM


Accton, Allied telesis, Avocent,

Broadcom, BlueCoat,

Cumulus, Chelsio, Centec,



F5, Fortigate,

Intel, Ixia,



Netgear, Netapp,

Sundray, Supermicro, Solarflare,





Compatible Option
  • Cisco/OEM**
  • Ubiquiti(UBNT)
  • HPE-Aruba
  • HPE (H3C)
  • Arista
  • Brocade
  • Dell (Force10)
  • Extreme
  • Juniper
  • Customized Requst

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Product Description Shipping & Payment Customer Reviews


10Gtek's ASF85-24-X2-D is a 1.25Gbps SFP transceiver supporting up to 550 meters transmission over OM3 MMF Fiber, following IEEE 802.3ab and SFP MSA 1000Base-SX. The SFP transceiver consists of VCSEL laser TOSA, PIN (tia) ROSA, Driver IC and eeprom I2C unit.

  • 1000Base-SX
  • Data Rate: 1.25Gb/s
  • Interface: Dual LC connectors
  • 850nm VCESL Laser Transmitter
  • 550 meters transmission over OM3 MMF Cable
  • Single 3.3V Power and TTL Logic Interface
  • Hot-Pluggable SFP Footprint
  • Compliant with IEEE 802.3ab
  • Compliant with SFP MSA
  • With DDM/DOM
  • Temp. Range(℃): 0~70
  • Gigabit Ethernet
  • Fiber Channel
  • Other Optical Links
Order Information:
Part Number Description Data Rate Wavelength Reach Fiber Type TX Power (dBm) Rx Sens. (dBm) DDM/DOM Temp. Range(°C)
ASF-GE-T 1000Base-T SFP GE CAT5e Copper 100M 1.25Gbps   100 m CAT5e     No 0~70
ASF13-24-40 1000Base-EX SFP 1310nm 40KM 1.25Gbps 1310nm 40 km SMF -4~0 ﹤ -22 Optional 0~70
ASF15-24-40 1000Base-EX SFP 1550nm 40KM 1.25Gbps 1550nm 40 km SMF -4~0 ﹤ -22 Optional 0~70
ASF15-24-80 1000Base-ZX SFP 1550nm 80KM 1.25Gbps 1550nm 80 km SMF 0~4 ﹤ -25 Optional 0~70
ASF15-24-120 1000Base-EZX SFP 1550nm 120KM 1.25Gbps 1550nm 120 km SMF 1~5 ﹤ -30 Optional 0~70
ABL34-24-02 1.25Gb/s BiDi SFP Tx1310/Rx1490nm 2KM 1.25Gbps Tx1310/Rx1490nm 2 km SMF -14~-10 < -22 Optional 0~70
ABL43-24-02 1.25Gb/s BiDi SFP Tx1490/Rx1310nm 2KM 1.25Gbps Tx1490/Rx1310nm 2 km SMF -14~-10 < -22 Optional 0~70
ABL34-24-20 1.25Gb/s BiDi SFP Tx1310/Rx1490nm 20KM 1.25Gbps Tx1310/Rx1490nm 20 km SMF -9~-3 ﹤ -22 Optional 0~70
ABL43-24-20 1.25Gb/s BiDi SFP Tx1490/Rx1310nm 20KM 1.25Gbps Tx1490/Rx1310nm 20 km SMF -9~-3 ﹤ -22 Optional 0~70
ABL34-24-40 1.25Gb/s BiDi SFP Tx1310/Rx1490nm 40KM 1.25Gbps Tx1310/Rx1490nm 40 km SMF -3~2 ﹤ -23 Optional 0~70
ABL43-24-40 1.25Gb/s BiDi SFP Tx1490/Rx1310nm 40KM 1.25Gbps Tx1490/Rx1310nm 40 km SMF -3~2 ﹤ -23 Optional 0~70
ABL35-24-02 1.25Gb/s BiDi SFP Tx1310/Rx1550nm, 2KM 1.25Gbps TX1310/RX1550nm 2 km SMF -10~4 ﹤ -22 Optional 0~70
ABL53-24-02 1.25Gb/s BiDi SFP Tx1550/Rx1310nm, 2KM 1.25Gbps TX1550/RX1310nm 2 km SMF -10~4 ﹤ -22 Optional 0~70
ABL35-24-20 1.25Gb/s BiDi SFP Tx1310/Rx1550nm ,20KM 1.25Gbps TX1310/RX1550nm 20 km SMF -8~-3 ﹤ -22 Optional 0~70
ABL53-24-20 1.25Gb/s BiDi SFP Tx1550/Rx1310nm, 20KM 1.25Gbps TX1550/RX1310nm 20 km SMF 8~-3 ﹤ -22 Optional 0~70
ABL35-24-40 1.25Gb/s BiDi SFP Tx1310/Rx1550nm, 40KM 1.25Gbps TX1310/RX1550nm 40 km SMF -5~0 ﹤ -22 Optional 0~70
ABL53-24-40 1.25Gb/s BiDi SFP Tx1550/Rx1310nm, 40KM 1.25Gbps TX1550/RX1310nm 40 km SMF -5~0 ﹤ -22 Optional 0~70
ABL45-24-80 1.25Gb/s BiDi SFP Tx1490/Rx1550nm 80KM 1.25Gbps Tx1490/Rx1550nm 80 km SMF 0~5 ﹤ -24 Optional 0~70
ABL54-24-80 1.25Gb/s BiDi SFP Tx1550/Rx1490nm 80KM 1.25Gbps Tx1550/Rx1490nm 80 km SMF 0~5 ﹤ -24 Optional 0~70
ABL45-24-120 1.25Gb/s BiDi SFP Tx1490/Rx1550nm 120KM 1.25Gbps Tx1490/Rx1550nm 120 km SMF 1~5 ﹤ -32 Optional 0~70
ABL54-24-120 1.25Gb/s BiDi SFP Tx1550/Rx1490nm 120KM 1.25Gbps Tx1550/Rx1490nm 120 km SMF 1~5 ﹤ -32 Optional 0~70
ASFxx-24-40 SFP 1000Base-EX CWDM 40KM 1.25Gbps CWDM 40 km SMF -5~0 ﹤ -22 Optional 0~70
ASFxx-24-80 SFP 1000Base-ZX CWDM 80KM 1.25Gbps CWDM 80 km SMF 0~4 ﹤ -25 Optional 0~70
ASFxx-24-120 SFP 1000Base-EZX CWDM 120KM 1.25Gbps CWDM 120 km SMF 1~5 ﹤ -32 Optional 0~70
ASFDxx-24-40 SFP 1000Base-EX DWDM 40KM 1.25Gbps DWDM 40 km SMF     Optional 0~70
ASFDxx-24-80 SFP 1000Base-ZX DWDM 80KM 1.25Gbps DWDM 80 km SMF -2~3 ﹤ -30 Optional 0~70
ASFDxx-24-120 SFP 1000Base-EZX DWDM 120KM 1.25Gbps DWDM 120 km SMF 0~4 ﹤ -30 Optional 0~70

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You may receive the transceiver in different packages, because we will choose a reasonable package according to the order quantity and ship it without notice. Please note that the quality of all transceivers is the same. Sorry for any inconveniences caused.

Shipping Methods

Global Shipping

Together with SFPcables, there is a Global Delivery from us like no others. We will not only delivery the correct shipment, but also for more things for an efficient and flexible way of business cooperation with our partners.
SFPcables.com ship worldwide to nearly every country across the globe, covering North and South America, Europe, Asia, Africa, Oceania, and more. We employ the services of major, trusted international carriers to ensure your package arrives to your destination safely and securely.

38 Country Free shipping

Online orders exceed $800.00 to following countries can enjoy Free Shipping;
Asia: Philippines, South Korea, Singapore, Brunei, Taiwan, Malaysia, Thailand, Japan, Indonisia, Indonesia, Kampuchea, Laos, Vietnam
North America: United States, Canada, Mexico
Oceania: Australia, New Zealand
Eastern Europe: Bulgaria, Estonia, Latvia, Lithuania, Slovakia, Romania
Southern Europe: Slovenia, Greece, Spain, Portugal, San Marino, Italy
Central Europe: Slovenia, Germany, Poland, Czech, Slovakia, Hungary, Austria, Switzerland
Western Europe: Belgium, Britain, Ireland, Netherlands, Luxemburg, France
Northern Europe: Sweden, Denmark, Finland, Norway

Typically, we use DHL and UPS to deliver your goods. Shipping methods are not fixed, they may vary according to country location, order amount, customer requirements, etc.

Payment Methods

Payment methods available at SFPcables.com include:

  • PayPal and PayPal Express
  • Bank to bank wire transfers (T/T)
  • Western Union
Warranty & Service

Warranty Policy:

Warranty Service Pack1*:     All 10Gtek's products share 1-year standard warranty.
Warranty Service Pack2*:     Enhanced Item (Apply to Online order at SFPcables.com)

DAC Cables (Passive) 3-Year Warranty
DAC Cables (Active) 3-Year Warranty
AOC Cable 3-Year Warranty
Fiber Optic Transceivers 3-Year Warranty (1G, 10G)
1.5-Year Warranty (25G, 40G, 100G, 200G)
Switch, Convertors 1-Year Warranty
NIC/CNA Cards 1-Year Warranty
Optical System 1-Year Warranty
Patch Cords 3-Year Warranty
Power Adapter
0.5-Year Warranty
Consumer cable 3-Month

15-Day money back Guarantee

15-Day money back guarantee applies to all products sold by SFPcables.com provided that the items are new, undamaged, unmodified and in good resalable condition. If you are not satisfied with the product, you can apply return within 15 days.
All freight charges, transaction costs (bank charge or Paypal cost, etc) are the responsibility of the customer.

Returns are not acceptable if:
  1. The products are proved to have been abused, misused, replaced, repaired, or modified.
  2. After 15 days of delivery, returns are not acceptable. If the items are still under warranty period, customer could ask for repair or replacement. 
  3. No Return agreement was reached with a SFPcables.com sales representative before Returns.
  4. Return process is not done based on SFPcables.com Return instructions.



The logos, products and/or company names referred to herein is for informational purposes only, merely indicating that 10Gtek’s products can be compatible with the mentioned products. The logo 10Gtek is a registered trademark of 10GTEK TRANSCEIVERS CO., LTD.

10GTEK TRANSCEIVERS CO., LTD. All Rights Reserved.


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1.25G SFP 1000Base-SX, 850nm, 550-meter SFP | SFP-GE-S
Free shipping on orders over $800.