Mingjiada Electronics is a long-term supplier and buyer of ASMedia’s PCIe Gen2 packet-switching chips, the ASM1812 and ASM1812I. Both models are 12-channel packet-switching chips supporting up to six downstream ports; the key distinction is that the ASM1812I is an industrial-grade version, with an operating temperature range of –40°C to 85°C, enabling it to meet reliability requirements in demanding industrial environments.
I. Product Overview
ASMedia’s PCIe packet switching product line spans multiple generations from PCIe Gen2 to Gen4, with the number of channels ranging from 6 to 80 to meet expansion requirements at various levels. The ASM1812/ASM1812I is designed for low-latency, low-cost, low-power PCIe Gen2 switching scenarios. Leveraging upstream PCIe Gen2×4 bandwidth, it enables users to build a variety of high-speed I/O systems, including servers, system storage and communication platforms. Building on this foundation, the ASM1812I is specifically designed for industrial-grade application environments; it is certified for wide temperature operation and is suitable for scenarios such as industrial automation and edge computing.
II. ASM1812 — PCIe Gen2 12-Lane / 6-Port Switch (Commercial Grade)
Product Overview
The ASM1812 is the core switch chip in ASMedia’s PCIe Gen2 series. Featuring a low-latency, low-cost and low-power design, it provides PCIe Gen2 switching capability with 12 lanes and up to 6 downstream ports. The downstream ports support PCIe Gen2×4 bandwidth and automatically detect lane configuration at start-up, making them suitable for building high-speed I/O systems such as servers, system storage and communication platforms.
Key Features
Upstream PCIe Interface
Supports 1, 2 or 4-lane PCIe connections to the root port
Automatic detection of lane configuration at boot-up
Single-lane data rates supported: 2.5 Gb (250 MB/s) and 5 Gb (500 MB/s)
Downstream PCIe Interface
8-lane PCIe 2.0 interface, supporting up to 6 PCIe ports
Supports L0s, L1, L23 and L3 power-saving states
Supports L1 sub-state deep power-saving mode
Supports wake-up from S3/S4 states
Supports independent port disable control
Supports LTR and AER
Both upstream and downstream ports support SRIS
Maximum payload size: 512 bytes
Supports hot-plugging and accidental removal
Key Specifications
Manufacturer: ASMedia
Product Type: PCIe Gen2 Switch
Number of Lanes: 12
Number of Downstream Ports: Up to 6
Upstream Interface: PCIe Gen2 ×4
Downstream Interface: PCIe 2.0, 8 Lanes
Single-Lane Data Rate: 2.5 Gb / 5 Gb per lane
Maximum Payload: 512 bytes
Package Type LFBGA 21×21 mm, 492-pin
Operating Temperature: Commercial Grade (0°C to 70°C)
Typical Applications: Server I/O expansion, NVMe SSD expansion, communications platforms, multi-port expansion cards
The ASM1812 has a long track record of market validation in the PCIe Gen2 switch sector and is widely used in PCIe lane expansion scenarios for entry-level servers, storage expansion cards and embedded systems. As new-generation high-speed storage and industrial-grade applications place increasing demands on bandwidth and reliability, the ASM1812 continues to enjoy strong demand in the mid-to-low-end expansion market thanks to its proven stability and reliability.
III. ASM1812I — PCIe Gen2 12-channel / 6-port Switch (Industrial Grade)
Product Overview
Building upon the ASM1812, the ASM1812I is specifically designed for industrial-grade environments. Its core switching architecture is identical to that of the ASM1812—12 lanes, up to 6 downstream ports, and upstream PCIe Gen2×4 bandwidth—but it is certified to industrial-grade temperature specifications, enabling stable operation within a wide temperature range of -40°C to 85°C.
Key Features
The ASM1812I shares the same functional characteristics as the ASM1812, including:
Upstream support for 1/2/4-channel PCIe connections to the root port
Automatic detection of channel configuration at boot-up
Single-channel data rates of 2.5 Gb (250 MB/s) / 5 Gb (500 MB/s)
8-channel PCIe 2.0 downstream interface, supporting up to 6 ports
Support for L0s/L1/L23/L3 and L1 sub-states for deep power-saving
Support for S3/S4 wake-up and port-independent disabling
Support for LTR, AER and SRIS
Maximum payload of 512 bytes
Support for hot-swapping and accidental removal
Industrial-grade differentiation
The core advantage of the ASM1812I lies in its wide-temperature operating capability. Whilst the commercial-grade ASM1812 is suitable for intermittent expansion scenarios involving normal temperatures, short durations and low loads, the industrial-grade ASM1812I meets the demands of harsh industrial environments, such as long-duration continuous data acquisition and round-the-clock unattended operation. It is well-suited for PCIe channel expansion applications in industrial automation, edge computing, rail transport and energy monitoring.
IV. Supply and Procurement Information
Supply Information
Mingjiada Electronics maintains a long-term stock of the full range of ASMedia PCIe switch chips, including:
ASM1812 (PCIe Gen2 12-lane / 6-port, commercial grade)
ASM1812I (PCIe Gen2 12-lane / 6-port, industrial grade, –40°C to 85°C)
ASM1806 / ASM1806I (PCIe Gen2 6-lane / 4-port)
ASM1824 (PCIe Gen2 24-lane / 12-port)
ASM2812 / ASM2812I (PCIe Gen3 12-lane / 6-port)
All the above models are available as brand-new, original stock. We support sample requests and bulk purchases, offering significant price advantages and guaranteed quality. Please feel free to contact us for the latest quotations and stock information.
Purchasing/Recycling Information
Mingjiada Electronics is simultaneously seeking to purchase the following ASMedia PCIe switch chips at competitive prices. Manufacturers and traders with stock are welcome to contact us:
ASM1812 / ASM1812I
ASM1806 / ASM1806I
ASM1824
ASM2812 / ASM2812I
ASM1083 and other ASMedia bridge and switch chips
Contact Details
For detailed product information on the ASM1812 / ASM1812I, to request samples, obtain a quotation or discuss buy-back partnerships, please contact the Mingjiada Electronics sales team. We will provide you with professional technical support and competitive pricing solutions.
Contact: Mr Chen
Mobile: +86 13410018555
Email: sales@hkmjd.com
Website: www.integrated-ic.com
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