OutbufferSize Sets or Retrieves the size of the output buffer. MSComm32 and SComm64 have the same syntax and functionality. Syntax:- SComm1.OutbufferSize = value   value:- A numerical expression indicating the size of the transmit buffer.   Example:- n = SComm1.OutbufferSize Remarks Set before the port is opened. This value takes effect (memory is allocated) when the port is opened. If you write more data into the transmit buffer exceeeding the size of the buffer then data loss will occur without warning (an OnComm error event (not a runtime error) is triggered 'after' the data loss occurs).