Pay in installments of $8.04 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
StarTech.com 2 Port PCI RS422/485 Serial Adapter Card with 161050 UARTThe StarTech. com PCI2S4851050 is a reliable, dual port PCI serial adapter that brings RS422 and RS485 capabilities to a desktop PC through a single PCI expansion slot. Built around the robust 161050 UART core, this card is designed for environments where legacy serial devices, POS systems, industrial controllers, or embedded peripherals still rely on dependable serial communication. With two DB9 RS422 RS485 ports, flexible signaling modes, and
The StarTech.com PCI2S4851050 is a reliable, dual-port PCI serial adapter that brings RS422 and RS485 capabilities to a desktop PC through a single PCI expansion slot. Built around the robust 161050 UART core, this card is designed for environments where legacy serial devices, POS systems, industrial controllers, or embedded peripherals still rely on dependable serial communication. With two DB9 RS422/RS485 ports, flexible signaling modes, and straightforward installation, this PCI serial card delivers a practical solution for upgrading or modernizing systems that require dependable, standards-based serial connectivity.
- Dual RS422/RS485 serial ports — Two DB9 connectors provide independent RS422/RS485 channels, enabling point-to-point and multi-drop configurations for a wide range of peripherals and industrial equipment. This makes it easy to connect sensors, barcode scanners, POS devices, or legacy controllers without sacrificing performance or reliability.
- High-performance 161050 UART — The PCI2S4851050 uses a dedicated 161050 UART core engineered for stable, low-latency serial communication. This translates to dependable data transfer with minimal timing jitter, making it well-suited for real-time control applications and data logging where consistency matters.
- Supports 2-wire and 4-wire RS485 modes — Flexible RS485 signaling supports both two-wire half-duplex and four-wire full-duplex configurations. This enables efficient bus topologies for multi-device networks and long-distance communications, with robust collision avoidance and improved noise immunity.
- Single PCI slot installation with broad compatibility — Designed for standard PCI slots in desktop workstations, the card fits easily into most PC chassis. It offers straightforward driver support to help you integrate RS422/RS485 functionality quickly, allowing you to focus on your application rather than hardware setup.
- Driver support and practical deployment — The StarTech PCI RS422/RS485 card is supported by widely used drivers for common operating systems, enabling seamless application development and easy maintenance. It is a practical choice for IT environments that value compatibility, reliability, and long-term availability of spare parts.
Technical Details of StarTech.com 2 Port PCI RS422/RS485 Serial Adapter Card with 161050 UART
- Product type: 2-Port PCI Serial Adapter Card (RS422/RS485)
- UART core: 161050
- Serial ports: 2 x DB9 RS422/RS485
- Interface: PCI (not PCIe)
- Port signaling support: RS422 and RS485, with 2-wire RS485 half-duplex and 4-wire RS485 full-duplex configurations
- Supported baud rates: Supports standard RS422/RS485 baud rates commonly used by serial devices (typical ranges up to 115,200 bps, configurable via software)
- Operating system compatibility: Windows and Linux (drivers provided by StarTech and/or motherboard vendors; check latest availability)
- Form factor: PCI adapter card for desktop PCs; standard PCI slot compatibility
- Power/voltage requirements: Bus-powered via PCI slot (no separate power connector required)
- Warranty: Typically backed by StarTech hardware warranty and technical support (check current terms)
how to install StarTech.com 2 Port PCI RS422/RS485 Serial Adapter Card
Installing the PCI2S4851050 is a straightforward process suitable for most standard desktop PCs. Follow these general steps to add the dual RS422/RS485 serial ports to your system:
1) Power down your computer and disconnect from power. Open the PC case and locate an available PCI expansion slot.
2) Remove the slot cover plate on the back of the chassis that corresponds to the PCI slot you will use. Align the card with the slot and firmly press it into place until the edge connector seats securely. Attach the metal bracket to the chassis with a screw to secure the card.
3) Connect your RS422/RS485 devices to the two DB9 connectors on the card. Plan your wiring for RS422 or RS485 mode as required by your devices and network topology, keeping wiring neat and within recommended cable lengths.
4) Reassemble the case, plug in the power, and boot the computer. Install the appropriate drivers and utilities. You can use the driver CD if included or download the latest drivers from StarTech’s website. Follow the on-screen prompts to complete installation.
5) After installation, verify port status in your operating system’s device manager (Windows) or using a suitable lsubsys/termios tool (Linux). Configure the serial port settings (baud rate, data bits, parity, stop bits) to match your connected devices, and test communication with a loopback or a simple terminal program.
Note: For Windows systems, ensure you install the correct driver version corresponding to your OS (32-bit or 64-bit). Linux users should load the appropriate kernel modules and verify device nodes (typically /dev/ttySx or similar) are created after driver installation.
Frequently asked questions
- Q: What systems does this card support? A: It is designed for Windows and Linux operating systems, with drivers provided by StarTech or vendor partners. Always check the latest driver compatibility for your specific OS version.
- Q: Do I need a specific PCI slot type? A: This is a PCI (not PCIe) card, so it requires a standard PCI slot on the motherboard. It will not fit PCIe slots without an adapter, and performance is tied to PCI bus speed and motherboard configuration.
- Q: Can I use RS422 and RS485 simultaneously on the two ports? A: Yes. Each port can be configured independently for RS422 or RS485 operation according to your device requirements.
- Q: What baud rates can I expect? A: The card supports common RS422/RS485 baud rates used by serial devices, with software configuration to match the connected peripherals. If you have a highly time-sensitive device, verify the supported rate range in the driver documentation.
- Q: Is termination or biasing required for RS485? A: In some RS485 installations, proper termination and biasing are recommended for long cables or multi-drop networks. Review your network layout and device manuals to determine whether line termination is needed.
- Q: Is there a warranty? A: StarTech typically offers a hardware warranty and technical support; check the current terms at the time of purchase for length and coverage details.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 8 reviews
Sort
Product Reviews
★★★★★ 5
Great Timex Watch
Color: Black/Yellow
This Timex Ironman watch arrived on time and is of great quality. I have used these watches for years and have NO complaints about their longevity, accuracy, or dependability. I will definitely purchase again if needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
★★★★★ 5
Item as described.
Color: Dark Blue
A timeless tradition of a great design and useful watch. Have been using this watch design for over a 30 years.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Great thowback to the OG Ironman, but Amazon's listing gets it undue negativity.
Color: Black/Yellow
Amazon's listing is not very good with it's wording so this watch has gotten undue negative reviews.
I've seen this model listed as both the Endure 30 and the Original 30 Shock, it has 1 alarm with 3 different modes (not 3 separate alarms), 200m WR, ISO shock resistance, (reverse) Indiglo with night mode, 2 time zones, 12/24hr time, 30 lap stopwatch, 24hr countdown timer (repeatable), and day/date (MM.DD or DD.MM). Its basically a slightly updated feature set compared to an Ironman 8-lap.
This watch is great, it's got the look of the original Ironman 8-lap with modern guts. The only minus for me is it could be a little slimmer on the wrist, but I also didn't realize it was shock resistant when I bought it. For comparison, it is a few mm smaller in all dimensions than a G-Shock G2300/G2310/GW2310 series. The band is similar to G-Shocks in that it is formed/molded around the wrist but like the case it's still slimmer in the way it wears around the wrist. Not as slim as an F91W but not as massive as any G-Shock basically. The module has a better display with bigger numbers than the above mentioned Casios. With the exception of the lap memory, the G23## G-Shocks have more features, but the Endure 30 is much easier to use thanks to the display and larger buttons.
If you want 3 alarms you need the very similar Classic 30. The main differences being the Classic has 3 separate alarms (not 1), occasion reminders and 3 time zones but losses the Ironman 8-lap look, the shock resistance and it's only 100m WR. The Classic seems to come in at least two case varieties (chunky or slim), two sizes and many color combinations.
If you only need the Endure 30's features but want a different shape/size/style/slimmness, I believe the Essential 10/30 and BASIC Transit models are functionally the same with only different lap memories, WR, and no shock resistance.
Unfortunately, Timex doesn't easily identify the actual module used in a watch like Casio, so the best way to figure out what features a watch has is to lookup the watch model on the Timex website. Of course the manuals do not always match the marketing names they have used over the years (Endure/Classic/Essential/etc), and each manual covers a few shapes/sizes of watch but just search for the model number in the manuals sections and you'll eventually find the right one. If no manual pops up right away delete digits from the right end of the model number until a manual is found, I believe those last digits only indicate slight variances in style/color that are not important to functionality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2021
★★★★★ 1
Good interface but unwearable watch band
Color: Black
This review will be divided into 3 sections: looks, usability, and comfort.
LOOKS
I guess there's not much to say as style is very individual. I think this watch looks good for what you pay for it.
USABILITY
What I liked about this watch is that I could use it right out of the box. I have had basic Timex digital watches before (never this exact interface), and I was able to quickly figure it out. A quick glance at the manual to make sure I wasn't unaware of any features and I had 100% grasp of all the watch's features. The Timex interface puts many others to shame with its user-friendliness. On this model Timex has added a 'guide' on the display that tells you which button will do what-- increase number, decrease number, etc. This is cool. If you're even remotely handy with interfaces, once you learn this one, you'll know it backwards and forwards, and even if you forget, there's the in-display guide.
The functions are standard for a Timex digital-- time and date, stopwatch with lap timing, countdown timer, and alarm. There is a 2nd time zone but no dedicated mode for it. You access it by holding the 'start' button when in the time mode. I like this feature as I occasionally need to know when to call people in 1 particular time zone. But, for example, if you are often switching back and forth between 2 time zones, you will have to reset the time to have the watch display the correct time at all times. And if you need more than 2 time zones, sorry, out of luck. Stopwatch (chrono) is good. Don't use the lap counter much but it seems to work well. Some have complained that the 'start' and 'stop' should be on the same button. Overall, it is a very uncluttered and usable interface.
At first I thought it was very inaccurate at timekeeping, but it must have gotten accidentally reset because over the few months since I set it, it's only a couple seconds off from time.gov. very good timekeeping.
It seems very water resistant. I have taken it swimming, surfing, and it held up fine. I haven't thoroughly tested its shock resistance but it has done some hiking and climbing where it got banged around a bit and it still works.
COMFORT
Unfortunately what the watch has in user interface usability, it totally lacks in comfort. The strap is a huge disaster. It is very rigid and uncomfortable. The 'waffling' or indented designs near the bezel on each side of the strap create areas where the strap digs into the wrist. with any prolonged wearing, it gets worse and worse until your wrist is begging you to take it off.
The strap is just absolutely godawful. I have read reviews where G Shock owners said it was very good, well though out and comfortable. If that is the case, I shudder to imagine what a G Shock is like on the wrist. If constant pinching around sensitive areas on the side of the wrist seems like it would be the kind of thing to bother you, avoid this watch. I tried swapping it for another Timex band, which amazingly enough was uncomfortable it a DIFFERENT area! It seems Timex doesn't put much thought into their bands-- no part of the band should dig into the wrist. That's just obvious.
CONCLUSION
I really want to like this watch, I do. It's good-looking. It's very usable in terms of features. But the strap is terrible, so much so that the watch is unwearable. Unfortunately it took me about a week to figure this out, during which time the watch got sufficient wear so that it is no longer new, returnable condition. I am keeping it, using it as a 'beater' watch in the gym (I put my watch on the ground in the gym). If you purchase it I recommend you wear it for a good few hours while not doing anything that will scratch it, so that you can return it if need be.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 5, 2014
★★★★★ 5
Solid watch!!
Color: Black/Digital/Black/Green
Great digital watch. Has many features. Built tough and looks great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
recommand products
Navy Seersucker Weekend Duffel
48.00
Dimpl Stack
22.95
xTune Toyota Tundra 07-13 / Toyota Sequoia 08-13 OEM Style Headlights Smoked HD-JH-TTU07-AM-SM - 5077356
168.00
Enkei Compe 16x7 0mm Offset 4x114.3 Bolt Pattern 72.6mm Bore Dia Matte Gunmetal Wheel - 477-670-4800GM
134.00
Hearts Crib Sheet
30.00