| NO. | Brand | Compatible P/N | Remarks |
| 1 | Cisco | SFP-1G-SX | |
| 2 | Arista Networks | SFP-1G-SX | |
| 3 | Huawei | eSFP-GE-SX-MM850 | |
| 4 | Juniper | EX-SFP-1GE-SX | |
| 5 | Brocade | E1MG-SX-OM |
| Cisco Compatible | SFP-1G-SX | Vendor Name | HYTOPTODEVICE |
| Form Factor | SFP | Max Data Rate | 1.25Gbps |
| Wavelength | 850nm | Max Distance | 550m over OM2 MMF |
| Connector | Duplex LC | Transmitter Type | 850nm VCSEL |
| Cable Type | MMF | Receiver Type | PIN |
| TX Power | -9.0~-3dBm | Receiver Sensitivity | < -18.0dBm |
| Protocols | SFF-8472 MSA Compliant, IEEE 802.3ah-2004 | Operation Temperature | 0°C to 70°C (32 to 158°F) |
Full Compatibility List and Supported Devices of Fiber Optic Transceiver
One of the biggest advantages of third-party optical transceiver is their strong brand compatibility,which helps enterprises cut hardware costs without sacrificing performance.Our 1G SFP optical transceivers are fully tested and certified to work seamlessly with the Cisco equipments:
Cisco Catalyst 2960 Series: WS-C2960-24TC-L, WS-C2960G-24TC-L, WS-C2960S-48FPD-L, WS-C2960X-24PD-L
Cisco Catalyst 3560 & 3650 Series: WS-C3560G-24TS, WS-C3560X-48T-S, WS-C3650-24TD-E
Cisco Catalyst 3750 & 3850 Series: WS-C3750G-48TS, WS-C3750X-24T-S, WS-C3850-24T-E
Cisco Catalyst 9200 & 9300 Series: C9200-24T, C9200L-48P-4X, C9300-24T, C9300-48U
Cisco ASR & ISR Router Series: ASR 901, ASR 1001-X, ISR 4331, ISR 4451-X
Cisco Nexus Series: Nexus 3048, Nexus 93180YC-FX
Main Application Scenarios of Fiber Connection Module
Intra-Data Center Connections: Patching core switches to top-of-rack (ToR) or end-of-row (EoR) servers within the same or adjacent server racks.
Local Enterprise Local Area Networks (LANs): Linking desktop workstations, distribution switches, and multi-floor office building backbones using multi-mode fiber infrastructure.
Campus Building Interconnects: Bridging closely situated structures, labs, or warehouses within a campus cluster where the distance is under 550 meters.
Storage Area Networks (SAN): Interconnecting high-speed network storage arrays and storage controllers directly into the data matrix.




Q1: What is the maximum distance supported by the Cisco SFP-1G-SX compatible module?
A1: It supports up to 220m over legacy OM1 (62.5/125µm) fiber, up to 550m over standard OM2 (50/125µm) fiber, and up to 1km over optimized OM3/OM4 laser-optimized multi-mode fiber.
Q2: Do I need to use an optical attenuator with this short-range module?
A2: No, you do not need an attenuator. The output power is intentionally mapped for short distances and will not saturate or damage the receiver.
Q3: What is the difference between SFP-1G-SX and GLC-SX-MMD?
A3: Both offer identical 1G 850nm 550m multi-mode performance, but the GLC-SX-MMD variant includes Digital Optical Monitoring (DOM) telemetry, whereas the standard historical SFP-1G-SX often does not.
Q4: What wavelength does the SFP-1G-SX operate on?
A4: It operates on a short-wave 850nm infrared light spectrum.
Q5: Can I use this transceiver with Single-Mode Fiber (SMF) patch cables?
A5: No, it is designed exclusively for Multi-Mode Fiber (MMF). Using single-mode fiber will cause massive light loss and the link will stay down.
Q6: Is the SFP-1G-SX hot-swappable?
A6: Yes, it is fully hot-pluggable. You can insert or extract the module without taking down the host hardware switch.
Why Network Engineers Choose HYTOPTODEVICE
HYTOPTODEVICE has supplied over 5000,000 optical transceiver modules to data centers, ISPs, and enterprise networks across 100+ countries since 2011. Every module undergoes a 72-hour burn-in test and full DDM/DOM validation before shipment.
"We replaced 200 Cisco-branded SFPs with HYTOPTODEVICE equivalents across our spine layer — zero compatibility issues, 40% cost reduction."— Network Architect, Tier-2 ISP, Germany
Quality Certification & Compliance
At HYTOPTODEVICE, our quality commitment is backed by industry-standard validations. From fiber optical transceiver manufacturing to final inspection, our processes ensure global compliance and reliability.
We adhere to rigorous standards for our SFP modules and network solutions:
ISO 9001: Certified quality management and production consistency.
CE & FCC: Fully compliant for seamless Global Market Access.
RoHS: Committed to environmental responsibility and hazardous material control.
Proven Reliability: Rigorous testing to reduce compliance risk and ensure safety.
Certified Quality. Global Standards. Guaranteed Performance.







