200G QSFP56 Transceivers Cables for InfiniBand HDR & RoCE

From SFP to OSFP

	OSFP	QSFP-DD	QSFP Series				SFP Series
Size	OSFP QSFP-DD QSFP112/QSFP56/QSFP28/QSFP+ SFP28/SFP+/SFP
Form Factor	OSFP	OSFP	OSFP112	QSFP56	OSFP28	QSFP+	SFP28	SFP+	SFP
Electrical Lanes	8	8	4	4	4	4	1	1	1
Single Channel Rate	50G/100G/ 200G	25G/50G/100G	100G	50G	25G	10G	25G	10G	1G
Modulation	PAM4	NRZ/PAM4	PAM4	PAM4	NRZ/PAM4	NRZ	NRZ	NRZ	NRZ
Connector Types	MPO/LC	MPO/LC	MPO/LC	MPO/LC	MPO/LC	MPO/LC	LC	LC	LC
Backward Compatibility	/	QSFP+/QSFP28/ QSFP56/QSFP112	OSFP+/QSFP28/QSFP56	QSFP+/QSFP28	QSFP+	/	SFP+	SFP	/

Frequently Asked Questions

QSFP56 Transceivers and Cables

Is QSFP56 backward compatible with QSFP28 ports?

No. QSFP56 modules cannot operate in QSFP28 ports. However, QSFP56 ports are backward-compatible with QSFP28 modules (at reduced speeds).

Can I upgrade from 100G QSFP28 to 200G QSFP56 without changing fiber types?

Yes. For example, 200G QSFP56 SR4 uses the same MTP/MPO-12 interface as 100G SR4, enabling seamless upgrades over existing multimode fiber.

What modulation does QSFP56 use?

QSFP56 leverages PAM4 modulation, with four 50 Gbps lanes (4×50G) to achieve 200G total bandwidth.

What connectors are used for QSFP56 SR4 and FR4 modules?

SR4 requires MTP/MPO-12 multimode fiber patch cables, while FR4 uses duplex LC connectors with standard single-mode fiber.

Can QSFP56 SR4 modules support breakout configurations?

Yes. 200G SR4 can split into 4×50G channels using MTP-to-4xLC breakout cables paired with 50G SFP56 SR transceivers.

What is the transmission distance of QSFP56 SR4 and FR4 modules?

The QSFP56 SR4 module supports up to 70 meters over OM3 and 100 meters over OM4/OM5 multimode fiber, while the FR4 variant achieves 2 kilometers over single-mode fiber.

Need More Help?

Drop us a message — we’ll reply shortly!

200G QSFP56 Transceivers and Cables

OSFP 400/800/1600G

QSFP-DD 400/800G

QSFP112 400G

QSFP56 200G

QSFP28 100G

QSFP+ 40G

SFP28 25G

SFP+ 10G

SFP 1G