The S17+ hash board soldering practice board is a hash board without BM397AG ASIC chips and heat sinks. Customers can purchase ASIC chips and heat sinks by themselves and improve everyone's soldering skills and familiarity through the repeated chip and heat sink soldering exercises. Made from high-quality materials, this base plate is durable and easy to assemble. The S17+ practice board can withstand repeated desoldering and improve its use efficiency.