Interface modules (line cards) Huawei depending on the type and functions are divided into the following types: Main Processing Unit (MPU) - Main Processor, Switch Fabric Unit (SFU) - Switching block, Centralized Monitoring Unit (CMU) - Centralized monitoring unit, Line Processing Unit (LPU, also called interface card or line card) - Linear Processor (LPU, also called interface card or line card, and others.
These modules add functionality to existing modular routers or switches. Each Huawei series or sub-series has its own interface modules, line cards, processor and network devices.
These modules can expand the functionality at high speeds, such as 100GE, or increase the performance of a router or switch. Huawei.
For convenience and understanding of the module, you can use this table, by decoding part numbers Huawei. For example, a part number of this kind: 
decrypted as follows according to this table: module Huawei CE series, with 24 ports 40GE QSFP
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Identifier
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Meaning
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Description
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A
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Brand
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It is fixed as CE, representing CloudEngine.
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B
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Line card type
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- L: Line Processing Unit for CE12800 series switches
- F: Flexible Service Unit for CE12800 series switches
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C
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Number of interfaces on the card
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For a line card with different types of interfaces, this field stands for the number of downlink interfaces. It has two digits. The first digit is 0 if the card has fewer than 10 interfaces.
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D
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Interface rate
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- G: GE interface
- X: 10GE interface
- Y: 25GE interface
- L: 40GE interface
- C: 100GE interface
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E
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Interface type
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- T: Base-T interface
- S: SFP/SFP+ interface
- X: XFP interface
- Q: QSFP+/QSFP28 interface
- F: CFP/CFP2/CFP4 interface
- C: CXP interface
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F
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Line card specifications
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- BA/EA/EC/EC1/MC/MC1: basic specifications
- ED/EF/EG/FD/FD1/FG/FG1/SD/MD: enhanced specifications
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Specifications of the interface module Huawei CR5D0MPUD270:
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Part Number
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03055705
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Model
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CR5D0MPUD270
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Description
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Main Processing Unit D3(Including 4G Memory and 2G USB)
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Attributes
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Hardware
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List Price(USD)
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Category
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Basic Configuration
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Product Line
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Networking
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Product Family
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Router
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Overview
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Processing Unit DE
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Sub Product Family
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NetEngine NE40E Router
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Product Series
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NE40E-X3
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EAN
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UOM
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PCS
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Pack Weight(kg)
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Pack Volume(m^3)
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Pack Dimension(D*W*H mm)
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Net Dimension(D*W*H mm)
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551*198*40
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Typic Power(W)
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33
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