▁Using ▁an ▁external ▁AC ▁Ad apter ▁( 1 6 . 2 V AC ), ▁cons olid ating ▁some ▁IC s , ▁and ▁taking ▁advantage ▁of ▁relax ed ▁F CC ▁emission ▁standards , ▁the ▁Int ell iv ision ▁II ▁has ▁a ▁significantly ▁smaller ▁foot print ▁than ▁the ▁original . ▁The ▁controllers , ▁now ▁det ach able , ▁have ▁a ▁different ▁feel , ▁with ▁pl astic ▁rather ▁than ▁rub ber ▁side ▁buttons ▁and ▁a ▁flat ▁memb rane ▁key pad . ▁ ▁Users ▁of ▁the ▁original ▁Int ell iv ision ▁missed ▁the ▁ability ▁to ▁find ▁key pad ▁buttons ▁by ▁the ▁tact ile ▁feel ▁of ▁the ▁original ▁controller ▁b ubble ▁key pad . ▁ ▁One ▁functional ▁difference ▁was ▁the ▁addition ▁of ▁a ▁video ▁input ▁to ▁the ▁cart ridge ▁port , ▁added ▁specifically ▁to ▁support ▁the ▁System ▁Ch anger . ▁ ▁The ▁System ▁Ch anger , ▁also ▁released ▁in ▁ 1 9 8 3 ▁by ▁Matt el , ▁is ▁an ▁Int ell iv ision ▁peri pher al ▁that ▁plays ▁At ari ▁ 2 6 0 0 ▁cart rid ges ▁through ▁the ▁Int ell iv ision . ▁ ▁The ▁Int ell iv ision ▁hand ▁controllers ▁can ▁be ▁used ▁to ▁play ▁At ari ▁ 2 6 0 0 ▁games . ▁ ▁The ▁System ▁Ch anger ▁also ▁has ▁two ▁controller ▁ports ▁compatible ▁with ▁At ari ▁jo yst icks . ▁ ▁The ▁original ▁Int ell iv ision ▁requires ▁a ▁hardware ▁modification ▁in ▁order ▁to ▁work ▁with ▁the ▁System ▁Ch anger ; ▁a ▁service ▁provided ▁by ▁Matt el . ▁ ▁Otherwise ▁the ▁Int