We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Expansion Boards.
ipros is IPROS GMS IPROS One of the largest technical database sites in Japan that collects information on.

Expansion Boards - Company Ranking(16 companies in total)

Last Updated: Aggregation Period:Nov 05, 2025〜Dec 02, 2025
This ranking is based on the number of page views on our site.

Company Name Featured Products
Product Image, Product Name, Price Range overview Application/Performance example
【Specifications】 ■ Number of Channels: 4 Channels ■ Input/Output Specifications: RS-232C ■ Transmission Method: Asynchronous Serial Transmis... 【Main Application Examples】 ■ Connection of RS-232C modems ■ Entrance and exit of RAS (Remote Access Service) ■ Control of UPS ■ Control of ...
【Specifications】 ■ Number of Channels: 4 Channels ■ Input/Output Specifications: RS-232C ■ Transmission Method: Asynchronous Serial Transmis... 【Main Application Examples】 ■ Connection of RS-232C modems ■ Entrance and exit of RAS (Remote Access Service) ■ Control of UPS ■ Control of ...
---

---

---
  1. Featured Products
    PCI bus RS-232C x4 port expansion boardPCI bus RS-232C x4 port expansion board
    overview
    【Specifications】 ■ Number of Channels: 4 Channels ■ Input/Output Specifications: RS-232C ■ Transmission Method: Asynchronous Serial Transmis...
    Application/Performance example
    【Main Application Examples】 ■ Connection of RS-232C modems ■ Entrance and exit of RAS (Remote Access Service) ■ Control of UPS ■ Control of ...
    PCI bus RS-232C x4 port expansion boardPCI bus RS-232C x4 port expansion board
    overview
    【Specifications】 ■ Number of Channels: 4 Channels ■ Input/Output Specifications: RS-232C ■ Transmission Method: Asynchronous Serial Transmis...
    Application/Performance example
    【Main Application Examples】 ■ Connection of RS-232C modems ■ Entrance and exit of RAS (Remote Access Service) ■ Control of UPS ■ Control of ...