Isingeniso samandla eselula

Amandla eselula, ishaja yeselula (ibhange lamandla, ishaja yeselula, ibhange lamandla, isikhwama somchamo, umzanyana; IsiNgisi: Ibhange lamandla) ishaja ephathekayo engathwalwa umuntu ngamunye futhi ingagcina ugesi. Isetshenziswa kakhulu ukushaja imikhiqizo ye-elekthronikhi yabathengi njengamadivayisi eselula aphathwayo (njengamafoni angenawaya namakhompyutha aphathekayo), ikakhulukazi ezindaweni lapho kungekho khona ugesi wangaphandle. Izingxenye zayo eziyinhloko zihlanganisa: amabhethri okugcina amandla, amasekhethi okusimamisa ugesi ophumayo (i-DC-isiguquli se-DC), kanye nezinto eziningi zikagesi ezihambayo eza namashaja azoshajwa{3}}ngamabhethri.
Ukuvela kwamandla eselula ekuqaleni kwakuwukushaja imikhiqizo ye-elekthronikhi yabathengi ezindaweni lapho kungekho khona ugesi wangaphandle, kodwa ngenxa yokuthi isixhumi esibonakalayo esiphuma kuso siyisixhumi esibonakalayo se-USB sendawo yonke, siphinde sisetshenziselwe ukunika amandla amanye amadivaysi noma izinto zokusebenza ezisebenzisa i-USB interface njengamatheminali okufaka amandla, njengezibani ze-USB LED, abalandeli bakagesi be-USB, njll.