How to Identify the Authenticity of Cisco GLC-SX-MM

GLC-SX-MM is a Cisco 1.25G, Gigabit multimode fiber optic module, which is available for multi-mode fiber optic cables with transmission distance up to 550m, It is also the industry standard Cisco 1000Base-SX Gigabit Ethernet SFP, Currently on the market there are many non-genuine, the following text will tell you how to identify true and false Cisco GLC SX MM modules.
In the network industry, Cisco (Cisco System Inc.) Can be described as no one know, no one knows all. With its IOS (Internet Operating System), Cisco in absolute leading position in the multi-protocol router on the market. Currently, the Internet, nearly 80% of the router are from Cisco. In fact, In addition to the flagship product of the router, Cisco has a full range of network devices, including hubs, switches, access servers, software and hardware firewall, network management software and so on. Cisco paid great attention to the track of the new technology, through a series of cooperation and mergers, Cisco successfully involved in broadband access, wireless communications and other emerging markets. This paper describes the Distinguish methods for Cisco switch components such as the transceiver modules. Take Cisco Cisco 1000Base-SX SF, GLC-SX-MM for example, below is the shot description and specifications about it:
GLC-SX-MM is specifically Cisco 1000Base-SX Gigabit Ethernet SFP transceiver module, the interface converter of which is a hot-swappable input/output device that plugs into a Gigabit Ethernet port or slot, linking the port with the network.
Original Cisco GLC-SX-MM
Features:
Manufacturer: Cisco Systems, Inc
Manufacturer Part Number: GLC-SX-MM= (30-1301-02)
Manufacturer Website Address: www.cisco.com
Product Type: SFP
Interfaces/Ports: 1 x 1000Base-SX
Interfaces/Ports Details: 1 x LC Duplex Connector 1000Base-SX
Dimensions: 0.33" Height x 0.53" Width x 2.22" Depth
Compatible GLC-SX-MM
Except for the original GLC-SX-MM module, many qualified fiber optic transceiver manufacturers producing the compatible GLC-SX-MM which will work well with all Cisco equipments just as the original ones, but the price is much more cheaper, and also widely accepted by customers. Cisco GLC-SX-MM Compatible 1000BASE-SX SFP 850nm module, GE SFP, LC connector SX transceiver, features are as below:
Up to 1.25Gb/s bi-directional data links
Duplex LC Connectors
Hot-pluggable SFP footprint
Built-in digital diagnostic functions
850nm VCSEL laser transmitter
Up to 550m on 50/125μm MMF
Metal enclosure for lower EMI
Single 3.3V power supply
Low power dissipation <700mW typical
Both original and compatible GLC-SX-MM SFP transceivers are high performance modules that support a data-rate of 1.25Gbps and can transmit data up to 550m over multi-mode fiber. Their applications are:
Gigabit Ethernet between switches, from switches to Wireless LAN Controllers, between switches and firewalls.
Fiber Channel – Connecting servers to NAS or SAN devices.
The original GLC-SX-MM is either manufactured by Cisco itself or its worldwide fondries. The modules will often indicated the origin countries such as China, Malaysia and so on. If there isn’t, it will be the fake. SFP transceivers can be divided into two kinds, single-mode module and multimode ones, physical state is the same with different models on the logo. GLC-LH-SM is single mode, GLC-SX-MM is multimode, for example, see this model, GLC-LH-SM =, "=" means it is the separately purchad accessory to procurement. The general price is currently quoted at $ 1495 and $ 750 in U.S. sales, in China mainland it is around 2000 to 4000 RMB. Currently, modules after the year of 2010 is mostly the new products with different size, shape as well as the shape.
Source: cisco 1000base-sx gigabit ethernet sfp