Material: Aluminium, Color: Silver. | Size : 100mm x 25mm x 10mm/ 3.94" x 0.98"x 0.4" (L*W*H) | Made of high quality aluminum, good thermal conductivity,Reduce the risk of hardware failure due to overheating. | Use heatsink adhesive glue to install heatsink . Glue is not included here. Please check the specification table and make sure that the size of the heatsink fits that of your component. | Package includes: 4 x Aluminum heat sink module.

Product name: DB9/RS232/485 adapter | Product specifications: 2X male to male | Material: metal iron shielding shell (nickel-plated to prevent rust) pin copper 24k gold-plated (good conductive contact) | Applicable use: Widely used in various RS232 serial ports and equipment communication fields, used for connection, docking, and extension of various DB9, DB15, DB25 connection lines. It is widely used in PLC controllers, touch screens, LED subtitles, programmers, single-chip computers, CNC machine tools, etc. | Package Content 2PCS X DB9 Adapters