ZeroFlap AECs

Credo’s ZeroFlap AECs deliver zero soft link flaps to support the lossless backend RDMA network that AI clusters are built on. The 800G ZeroFlap AEC family, with up to 7 m length, enables full host-to-switch connectivity in leading GPU clusters.

ZeroFlap AECs

Credo invented Active Electrical Cables (AECs). AECs can replace direct-attached cables (DACs) to bring superior bend radius, lighter weight, and up to 75% less volume than DACs.

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ZeroFlap AEC products

Plug-and-play copper interconnect cables designed for affordable, lossless operation at 100G, 200G, 400G, 800G and 1.6T speeds.

Product	Configuration	Host Data Rate / Channel	Line Data Rate / Channel	Side A Speed	Side B Speed	Reach	Power Supplies	Operating Temperature	Media
400G CLOS : DD to DD	8:8	56G	56G	QSFP-DD (8x56G)	QSFP-DD (8x56G)	1m to 3m	3.3V	0 to 70°C	Copper	View
400G SPAN : DD to DD	8:8	56G	56G	QSFP-DD (8x56G)	QSFP-DD (8x56G)	3.5m to 7m	3.3V	0 to 70°C	Copper	View
400G SHIFT : DD to 2*Q56	8:8	56G	56G	QSFP-DD (8x56G)	2 x QSFP56 (4X56G)	1m to 5m	3.3V	0 to 70°C	Copper	View
400G SHIFT : DD to 4*Q28	8:4	56G	28G NRZ	QSFP-DD (8x56G)	4x QSFP28 (4x28G)	1m to 5m	3.3V	0 to 70°C	Copper	View

400G CLOS : DD to DD

View

Configuration

8:8

Host Data Rate / Channel

56G

Line Data Rate / Channel

56G

Side A Speed

QSFP-DD (8x56G)

Side B Speed

QSFP-DD (8x56G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

400G SPAN : DD to DD

View

Configuration

8:8

Host Data Rate / Channel

56G

Line Data Rate / Channel

56G

Side A Speed

QSFP-DD (8x56G)

Side B Speed

QSFP-DD (8x56G)

Reach

3.5m to 7m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

400G SHIFT : DD to 2*Q56

View

Configuration

8:8

Host Data Rate / Channel

56G

Line Data Rate / Channel

56G

Side A Speed

QSFP-DD (8x56G)

Side B Speed

2 x QSFP56 (4X56G)

Reach

1m to 5m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

400G SHIFT : DD to 4*Q28

View

Configuration

8:4

Host Data Rate / Channel

56G

Line Data Rate / Channel

28G NRZ

Side A Speed

QSFP-DD (8x56G)

Side B Speed

4x QSFP28 (4x28G)

Reach

1m to 5m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

Product	Configuration	Host Data Rate / Channel	Line Data Rate / Channel	Side A Speed	Side B Speed	Reach	Power Supplies	Operating Temperature	Media
800G CLOS : OSFP to OSFP	8:8	112G	112G	OSFP (8x112G)	OSFP (8x112G)	1m to 3m	3.3V	0 to 70°C	Copper	View
800G CLOS : OSFP to OSFP-RHS	8:8	112G	112G	OSFP (8x112G)	OSFP (8x112G)	1m to 3m	3.3V	0 to 70°C	Copper	View
800G SHIFT : OSFP to 2*OSFP-RHS	8:8	112G	112G	OSFP (8x112G)	2 x OSFP_RHS (4x112G)	1m to 7m	3.3V	0 to 70°C	Copper	View
800G SHIFT : OSFP to 2*Q112	8:8	112G	112G	OSFP (8x112G)	2 x QSFP112 (4x112G)	1m to 7m	3.3V	0 to 70°C	Copper	View
800G CLOS : DD to DD	8:8	112G	112G	QSFP-DD (8x112G)	QSFP-DD (8x112G)	1m to 3m	3.3V	0 to 70°C	Copper	View
800G SHIFT : DD to 2*DD	8:8	112G	112G	QSFP-DD (8x112G)	2 x QSFP-DD (4x112G)	1m to 3m	3.3V	0 to 70°C	Copper	View
400G CLOS : DD to Q112	4:4	112G	112G	QSFP-DD (4x112G)	QSFP112 (4x112G)	1m to 3m	3.3V	0 to 70°C	Copper	View
400G CLOS : Q112 to Q112	4:4	112G	112G	QSFP112 (4x112G)	QSFP112 (4x112G)	1m to 3m	3.3V	0 to 70°C	Copper	View
800G eLBM : OSFP	8:8	112G	112G				3.3V	0 to 70°C		View
800G eLBM : DD	8:8	112G	112G				3.3V	0 to 70°C		View

800G CLOS : OSFP to OSFP

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

OSFP (8x112G)

Side B Speed

OSFP (8x112G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

800G CLOS : OSFP to OSFP-RHS

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

OSFP (8x112G)

Side B Speed

OSFP (8x112G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

800G SHIFT : OSFP to 2*OSFP-RHS

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

OSFP (8x112G)

Side B Speed

2 x OSFP_RHS (4x112G)

Reach

1m to 7m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

800G SHIFT : OSFP to 2*Q112

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

OSFP (8x112G)

Side B Speed

2 x QSFP112 (4x112G)

Reach

1m to 7m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

800G CLOS : DD to DD

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

QSFP-DD (8x112G)

Side B Speed

QSFP-DD (8x112G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

800G SHIFT : DD to 2*DD

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

QSFP-DD (8x112G)

Side B Speed

2 x QSFP-DD (4x112G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

400G CLOS : DD to Q112

View

Configuration

4:4

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

QSFP-DD (4x112G)

Side B Speed

QSFP112 (4x112G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

400G CLOS : Q112 to Q112

View

Configuration

4:4

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Side A Speed

QSFP112 (4x112G)

Side B Speed

QSFP112 (4x112G)

Reach

1m to 3m

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Media

Copper

800G eLBM : OSFP

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Power Supplies

3.3V

Operating Temperature

0 to 70°C

800G eLBM : DD

View

Configuration

8:8

Host Data Rate / Channel

112G

Line Data Rate / Channel

112G

Power Supplies

3.3V

Operating Temperature

0 to 70°C

Application notes

ZeroFlap AECs

350Tb Jericho2c + DDC Switch

ZeroFlap AECs

96Tb Jericho2 DDC Switch

ZeroFlap AECs

100Tb Tomahawk4 DDC Switch

AEC Attributes

Active Electrical Cables (AECs) are narrow gauge copper cables with industry-standard connectors at each end. Credo has integrated our low-power, high-performance retimers, gearboxes and FEC circuitry in the connectors to ensure signal integrity at 56G and 112G per lane over reach ranging from 0.5m to 7m. The SerDes devices not only ensure signal integrity retiming, and speed shifting, but they enable throughput with cables that are lighter weight, less volume, and more reliable than other solutions.

Low Power

Up to 50% less power than AOCs enabling unprecedented DDC densities.

Lightweight

AECs replace DACs with up to 75% less weight and volume.

Bend Radius

Tighter bend radius, and longer reach at 1.6T.

Speed Shifting/Retiming

Energy-efficient, high-performance retimers and gearboxes.

ZeroFlap AECs

ZeroFlap AECs

ZeroFlap AEC products

Application notes

350Tb Jericho2c + DDC Switch

96Tb Jericho2 DDC Switch

100Tb Tomahawk4 DDC Switch

AEC Attributes

Low Power

Lightweight

Bend Radius

Speed Shifting/Retiming

Credo Unveils ZeroFlap Optical Transceivers – A Reliability Revolution for Optics in AI Networks

Credo to Showcase AI Scale Out Fabric Featuring Credo Optical DSPs at OFC 2025

Credo Joins Arm Total Design to Accelerate the Development of Custom Silicon for AI Data Centers

Reach out today to connect with Credo

ZeroFlap AECs

ZeroFlap AECs

ZeroFlap AEC products

Application notes

350Tb Jericho2c + DDC Switch

96Tb Jericho2 DDC Switch

100Tb Tomahawk4 DDC Switch

AEC Attributes

Low Power

Lightweight

Bend Radius

Speed Shifting/Retiming

Latest insights and connections

Credo Unveils ZeroFlap Optical Transceivers – A Reliability Revolution for Optics in AI Networks

Credo to Showcase AI Scale Out Fabric Featuring Credo Optical DSPs at OFC 2025

Credo Joins Arm Total Design to Accelerate the Development of Custom Silicon for AI Data Centers

Reach out today to connect with Credo