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H3C QSFPDD-400G-SR4-MM850 Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m DOM MPO-12/APC MMF Ethernet Optical Transceiver Module
H3C QSFPDD-400G-SR4-MM850 Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m DOM MPO-12/APC MMF Ethernet Optical Transceiver Module
H3C QSFPDD-400G-SR4-MM850 Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m DOM MPO-12/APC MMF Ethernet Optical Transceiver Module
P/N: QDD-400G-SR4
US$429.00
9
Solds
12
Reviews
4
Questions
safeguard
4-Year Warranty
30-Day Returns
30-Day Exchange
（1000 In Stock）

Product Highlights

Built-in Maxlinear Chip, Max. Power Consumption 8W
Tested in Targeted Switches for Superior Performance, Quality, and Reliability
Compliant with QSFP-DD MSA, CMIS Rev5.2
Hot Pluggable QSFP-DD Form Factor
High-speed Electrical Compliant to IEEE802.3bs
8x 50G PAM4 Retimed 400GAUI-8 Electrical Interface
QSFP-DD Port is Backward Compatible with QSFP+, QSFP28 and QSFP56 Modules
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Specifications
Q&A
Reviews
Resources
H3C QSFPDD-400G-SR4-MM850 Compatible 400GBASE-SR4 QSFP-DD PAM4 850nm 100m DOM MPO-12/APC MMF Ethernet Optical Transceiver Module
The 400GBASE-SR4 module, MTP/MPO-12 connector, up to 100m over parallel OM4 multi-mode fiber. It is compliant to IEEE 802.3bs protocol and 400GAUI-8 standard.The 400 Gigabit Ethernet signal is carried over four parallel lanes by one wavelength per lane. It can support 2 x 200G-SR and 4 x 100G-SR.
Specifications
Part Number
QSFPDD-400G-SR4-MM850
Vendor Name
AICPLIGHT
Form Factor
QSFP-DD
Max Data Rate
400Gbps
Wavelength
850nm
Max Cable Distance
60m@OM3/100m@OM4
Connector
MTP/MPO-12 (APC)
Media
MMF
Transmitter Type
VCSEL 850nm
Receiver Type
PIN
TX Power
-4.6~4dBm
RX Power
-6.3~4dBm
Max Power Consumption
8W
Extinction Ratio
2.5dB
DDM/DOM
Supported
Commercial Temperature Range
0 to 70°C (32 to 158°F)
Modulation (Electrical)
4x100G-PAM4
Modulation (Optical)
8x50G-PAM4
CDR (Clock and Data Recovery)
TX & RX
Inbuilt FEC
Yes
Core Size
50/125µm
Packaging Technology
COB
Protocols
IEEE 802.3bs, QSFP-DD MSA, IEEE 802.3db,CMIS rev 5.2
Warranty
5 Years
Certification
Product
Product
Product
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Product
Questions & Answers
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All (4) Application (1)Product (1)Compatibility (1)Performance (1)
Q:

Are these suitable for edge computing?

by j***m on 2025-07-28 21:39:02

A:

Yes, compact and high-performance modules are available for edge devices.

by AICPLIGHT on 2025-07-29 20:12:00

like icon Helpful 0
comment icon Comment 0
Q:

Do these cables support PAM4 modulation?

by 8***m on 2025-04-12 15:03:02

A:

Yes, many modules and cables support PAM4 encoding.

by AICPLIGHT on 2025-04-12 17:01:41

like icon Helpful 0
comment icon Comment 0
Q:

What fiber connectors are supported?

by D***m on 2025-03-05 09:04:55

A:

We support LC, MPO, and MTP connectors based on the module type.

by AICPLIGHT on 2025-03-06 07:31:41

like icon Helpful 0
comment icon Comment 0
Q:

Is the firmware upgradeable?

by 6***m on 2024-12-12 09:36:00

A:

Some models support firmware upgrades; please contact us for details.

by AICPLIGHT on 2024-12-13 02:36:52

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Customer Reviews
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All (12) Performance (3)Compatibility (2)Ease of Use (4)Customer Support (3)
c
c***m
2025-06-14 13:04:21
Confirmed Purchase
5.0

Recognized immediately by our monitoring system—no configuration needed.

link icon Helpful 0
comment icon Comment 0
5
5***m
2025-06-11 15:15:33
Confirmed Purchase
5.0

The signal quality remains intact even at extended range over single-mode fiber.

link icon Helpful 0
comment icon Comment 0
x
x***m
2025-06-11 00:09:05
Confirmed Purchase
5.0

Ideal for large-scale cloud and DCI applications—maintains excellent performance across long-haul distances.

link icon Helpful 0
comment icon Comment 0
x
x***m
2025-06-06 08:52:10
Confirmed Purchase
5.0

Technical support provided clear guidance on 800G-to-2x400G breakouts for our aggregation layer.

link icon Helpful 0
comment icon Comment 0
C
C***m
2025-05-22 22:01:28
Confirmed Purchase
5.0

The latch design makes removal and re-insertion quick even in tight spaces.

link icon Helpful 0
comment icon Comment 0
b
b***m
2025-05-21 19:47:23
Confirmed Purchase
5.0

After deployment, support followed up to ensure the modules had passed our internal benchmarks.

link icon Helpful 0
comment icon Comment 0
C
C***m
2025-05-16 07:03:06
Confirmed Purchase
5.0

These Ethernet modules run flawlessly under sustained 800G load, with consistent throughput and thermal stability.

link icon Helpful 0
comment icon Comment 0
K
K***m
2025-05-02 23:56:47
Confirmed Purchase
5.0

Fully interoperable with Arista, Dell, and white-box switches in our lab.

link icon Helpful 0
comment icon Comment 0
4
4***m
2025-05-02 03:26:06
Confirmed Purchase
5.0

The plug-and-play functionality helped speed up our Ethernet DCI rollout significantly.

link icon Helpful 0
comment icon Comment 0
X
X***m
2025-05-01 15:41:58
Confirmed Purchase
5.0

These modules were pre-programmed and ready to install out of the box—zero configuration needed.

link icon Helpful 0
comment icon Comment 0
U
U***m
2025-04-23 08:44:48
Confirmed Purchase
5.0

These modules were pre-programmed and ready to install out of the box—zero configuration needed.

link icon Helpful 0
comment icon Comment 0
6
6***m
2025-04-07 01:09:36
Confirmed Purchase
5.0

The pre-sales consultation was detailed and tailored to our specific data center needs. Very professional experience.

link icon Helpful 0
comment icon Comment 0
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