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This review is from: SYBA PCI-Express 4 Port Serial Card Model SY-PEX-4S
Pros: RS232 ports work as expected
Cons: Device is advertised as supporting RS485. However, after talking to a SYBA technication, they informed me I would need a RS232 to RS485 adaptor for 485 to work.READ FULL REVIEW
Pros: Excellent case with great internal cooling.
Cons: I have bought four of these cases. The first two case came with a TC400R8 power supply, the last two with a CP12040 power supply. The fist two are quite and have been working continuously for two year. The last two are noise and have caused nothing but problems. The last one I bought has high ripple on the +12V supply and one of the two redunant supplies quit after a couple of days.
Other Thoughts: I have replaced both CP12040 power supplies with S61EPS units. The S61EPS units are quite, have high efficiency and have very low ripple.READ FULL REVIEW
Pros: Very quiet and each DC voltage has very low ripple
Cons: None in my caseREAD FULL REVIEW