This RS-232 Female icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 15,500 icons, all in the same style and quality.
This looks like an upside down trapezoid. The corners of the trapezoid are rounded. In the center of the trapezoid are nine circles. There's a line of five circles near the top of the trapezoid, and a line of four circles near the bottom.