400G-QSFP-DD-LR4 2km Optical Module RTXM290-342 CWDM Transceiver EML Original

400G QSFP-DD LR4 is a type of transceiver module that is used in high-speed data communications networks. QSFP-DD stands for Quad Small Form-factor Pluggable Double Density and LR4 stands for Long Range 4.

This transceiver module can transmit data at a rate of 400 Gigabits per second (Gbps) over a distance of up to 10 kilometers. The LR4 designation indicates that it uses four channels of 100Gbps each, with each channel transmitting data over a different wavelength (1310nm, 1295nm, 1275nm, and 1255nm) in the optical fiber.

This type of transceiver module is commonly used in data centers and high-performance computing applications where high-speed and long-distance data transmission is required. It is typically used to connect switches, routers, and other networking equipment.

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FAQ
Q1. Are your transceiver modules compatible with Cisco?
A1: Yes, Topstar transceivers can compatible with Cisco. All the brand Topstar's SFP compatible as the fellowing:Cisco, Nortel, Juniper, 3COM, H3C, Alcatel-lucent, FOUNDRY, D-Link, EXTREME, Ruijie, NETGEAR, ZTE, Enterasys, ZyXEL, Linksys, Ericsson, DCN, Allied, SMC, Brocade, Force10, Hirschmann, Planet, Adtran, ASNTE, Trendnet, BDCOM, BLADE, BITWAY, Telco, Feixun...etc.
 
Q2. How does your company do regarding quality control?
A2: Every single optic individually tested in our test center , and also tested for compatibility on a variety of different brands of network equipment.
 
Q3. What are the trade terms?
A3: Lead Time: we keep 40,000pcs SFP in stock ready to ship.
Payment term: T/T, Western Union, Alipay, Paypal, L/C and so on for your option.
 
Q4. What is operating temperature range of optical modules?
A4: Commercial temperature range(COM) : 0 to 70°C(32 to 158°F)
 
Storage temperature range:-40 to +85°C(-40 to 185°F)
We can supply according to your request.