1. Computer Cables & Connectors Items
  2. sku: 4950941827492752
  3. STARTECH PEX4S553B

STARTECH PEX4S553B Port Pci Card Breakout Cable RS232

Pex4s553b Startech 4 Port Pci Express Rs232 Serial Card With Breakout Cable

( Brand: Startech ), ( Manufacturer Part Number: PEX4S553B ), ( Part Type: Card Cable ), ( Country Of Origin: China )

Review STARTECH Port Pci Express Rs232 Serial Card Breakout Cable

The StarTech.com PEX4S553B Port PCIRS232 Card Breakout Cable is a versatile and practical solution for expanding the connectivity of your PCI slot on a computer. This RS-232 cable breakout provides an easy-to-use interface for connecting multiple RS-232 devices, making it an excellent choice for various applications.

The PEX4S553B is a PCI card featuring five RS-232 DB-9 female ports, which can be independently configured. Each port supports data rates up to 19,200 baud, making it suitable for a wide range of serial communications applications. The cable breakout card is compatible with both 5V and 12V operating systems, ensuring compatibility with various devices.

The StarTech.com PEX4S553B Port PCIRS232 Card Breakout Cable is designed with a robust construction to ensure optimal performance and reliability. It is made with high-quality components, ensuring that it can handle the demands of heavy usage. The card comes with a built-in isolation transformer, which provides galvanic isolation between the host computer and the connected devices, protecting against potential damage from electrical interference.

Installing the PEX4S553B is a simple and straightforward process. The PCI card is easily installed into an available PCI slot on your computer. Once installed, you can connect up to five RS-232 devices to the card using DB-9 male to DB-9 male cables (not included). The cable breakout card is also backed by StarTech.com's Lifetime Warranty, ensuring that you have peace of mind when using the product.

In summary, the StarTech.com PEX4S553B Port PCIRS232 Card Breakout Cable is a high-performance and versatile PCI card that offers five independent RS-232 DB-9 female ports. It is suitable for various applications and is designed with a robust construction to ensure optimal performance and reliability. The simple installation process, compatibility with both 5V and 12V operating systems, and built-in isolation transformer make it a valuable addition to any computer setup.

The StarTech PEX4S553B Port PCIRS232 Card Breakout Cable is a device used to convert a PCI Express slot in a computer into multiple RS-232 serial ports. Here are some potential pros and cons of buying this product:

Pros:

1. Increases the number of available RS-232 serial ports on a computer.

2. Compact design that utilizes a single PCI Express slot.

3. Supports data transfer rates up to 256 KBaud.

4. Compatible with both 32-bit and 64-bit operating systems.

5. Backed by StarTech's 2-year warranty.

Cons:

1. Requires a PCI Express slot, which may not be available on all computers.

2. Additional power connector required for some systems.

3. May not support high-speed data transfer or advanced features of some serial devices.

4. May require drivers for certain operating systems or serial software.

5. Can be more expensive than other solutions, such as USB-to-serial adapters or standalone serial cards.

In conclusion, the StarTech PEX4S553B Port PCIRS232 Card Breakout Cable can be a useful solution for increasing the number of available RS-232 serial ports on a computer, particularly for systems that lack sufficient ports. However, it may not be the best option for all users, depending on their specific requirements and budget.

If you only need a few additional serial ports and have a USB port available, a USB-to-serial adapter may be a more cost-effective and convenient option. On the other hand, if you require a large number of serial ports or need to connect to devices that do not support USB, then a PCI Express serial card like the StarTech PEX4S553B may be a better choice. Ultimately, the decision depends on your specific use case and hardware configuration.

Details:

The included breakout cable offers flexibility in managing connections and allows for easy installation a PCI Express slot. Ideal for businesses or individuals needing multiple serial ports communication, this product is a reliable solution expanding networking capabilities. The STARTECH PEX4S553B 4 Port PCI Express RS232 Serial Card with Breakout Cable is a high-quality computer accessory designed for expanding serial connectivity in system.

part #: pex4s553b prices

  • $7.99-$12.99

specifications compocables:

  • brand: Startech
  • mpn: Pex4s553b
  • part type: Card Cable
  • country of origin: China

returns compocables:

  • policy: No Returns

offer compocables:

  • options: Ship-to-home
  • quantity: 1
  • sold: 0
  • started: January 5, 2026
  • availability: In Stock

general compocables:

  • Computers/Tablet's Networking > Computer Cables Connectors > Other Computer Cables
  • condition: New

payments compocables:

  • wallet: Google-pay
  • other
  • credit card: Visa

shipping compocables:

  • type: Calculated
  • service: USPS Ground Advantage
  • transit: 3-8 Days
  • carrier: USPS
  • cost: $0.00
  • class: Standard

seller compocables:

  • city: Clermont, Florida
  • rating: 99.6%
  • # reviews: 10924
part type: card cable, country of origin: china,
category: computers > computers/tablets networking > computer cables connectors > computer cables, sku: 4950941827492752,

Startech PEX4S553B Is Similar To:

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5 offers $7.99–$12.99 USD
  • Offer #1: $12.99 price + $0.00 shipping estimate = $12.99* total. The card is compatible with StarTech products and is ideal for connecting peripheral devices that require an RS-232 interface. With its compact and low profile design, it is perfect for adding a single serial port to your system.FREE SHIPPING
  • Offer #2: $12.99 price + $0.00 shipping estimate = $12.99* total.FREE SHIPPING
  • Offer #3: $7.99 price + $5.97 shipping estimate = $13.96* total. Seems to work okay but I do not have the 4-port breakout cable to fully test this StarTech PCI Express x1 4-Port RS232 Serial Adapter Card.+$5.97 shipping
  • Offer #4: $14.99 price + $0.00 shipping estimate = $14.99* total. Allow a user to connect multiple hard drives to a single computer Check that the card is recognized Card is visible in the device manager Pass. MPN.FREE SHIPPING
  • Offer #5: $9.95 price + $8.06 shipping estimate = $18.01* total. Pulled from working HP Elite desk Tower PC G2 seem to be in good working order when pulled.+$8.06 shipping

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