Itshaneli yekhebula yitreyi yentambo evalwe ngokupheleleyo.Umahluko kwi-tray kwingcamango kukuba umlinganiselo wobude nobubanzi buhlukile.I-tray ayinzulu kwaye ibanzi, kwaye umjelo wentambo unobunzulu obusisigxina.Eyona nto ifanelekileyo ukubeka iintambo zekhompyutha, iintambo zonxibelelwano kunye neentambo zokulawula kunye nezinye iintambo ezinobushushu obuphantsi.I-Metal box wiring ingenza intambo yombane ebuthathaka ingabikho ukuphazamiseka komgca wombane onamandla, intambo inokufumana ukukhuselwa kakuhle kwindawo emanzi kunye ne-corrosion by box box wiring.