A communications panel (100, 300) comprising: a chassis (110, 310) including first and second sidewalls (112, 113, 312, 313) extending between a base (111, 311) and a cover and extending between an open front (116, 316) and a rear (117, 317), the first sidewall defining an aperture (124, 324); a spool arrangement (130, 330) disposed within the interior of the chassis (110, 310), the spool arrangement (130, 330) including: a tray (131, 331), a spool (140, 340) rotatably disposed on the tray (131, 331), a spool locking arrangement (160, 360) including a lock bar (135, 335) aligned with the aperture (124, 324) of the first sidewall of the chassis when the spool arrangement (130, 330) is disposed in the chassis (110, 310), the lock bar (135, 335) configured to slide between a retracted position in which the spool (140, 340) is free to rotate within the chassis and an extended position in which the spool (140, 340) cannot rotate, the lock bar (135, 335) being biased to the extended position in which the lock bar (135, 335) extends through the aperture (124, 324), wherein the lock bar (135, 335) is removed from the aperture (124, 324) when disposed in the retracted position, and an adapter arrangement (150, 350) disposed on the spool (140, 340), characterized in that the adapter arrangement (150, 350) is configured to slide relative to the spool (140, 340) between a connection position and a payout position, such that the lock bar (135, 335) is retracted when the adapter arrangement (150, 350) is slid to the payout position, and such that the lock bar (135, 335) is extended into the aperture (124, 324) when the adapter arrangement (150, 350) is slid to the connection position. a chassis (110, 310) including first and second sidewalls (112, 113, 312, 313) extending between a base (111, 311) and a cover and extending between an open front (116, 316) and a rear (117, 317), the first sidewall defining an aperture (124, 324); a spool arrangement (130, 330) disposed within the interior of the chassis (110, 310), the spool arrangement (130, 330) including: a tray (131, 331), a spool (140, 340) rotatably disposed on the tray (131, 331), a spool locking arrangement (160, 360) including a lock bar (135, 335) aligned with the aperture (124, 324) of the first sidewall of the chassis when the spool arrangement (130, 330) is disposed in the chassis (110, 310), the lock bar (135, 335) configured to slide between a retracted position in which the spool (140, 340) is free to rotate within the chassis and an extended position in which the spool (140, 340) cannot rotate, the lock bar (135, 335) being biased to the extended position in which the lock bar (135, 335) extends through the aperture (124, 324), wherein the lock bar (135, 335) is removed from the aperture (124, 324) when disposed in the retracted position, and an adapter arrangement (150, 350) disposed on the spool (140, 340), characterized in that the adapter arrangement (150, 350) is configured to slide relative to the spool (140, 340) between a connection position and a payout position, such that the lock bar (135, 335) is retracted when the adapter arrangement (150, 350) is slid to the payout position, and such that the lock bar (135, 335) is extended into the aperture (124, 324) when the adapter arrangement (150, 350) is slid to the connection position. a tray (131, 331), a spool (140, 340) rotatably disposed on the tray (131, 331), a spool locking arrangement (160, 360) including a lock bar (135, 335) aligned with the aperture (124, 324) of the first sidewall of the chassis when the spool arrangement (130, 330) is disposed in the chassis (110, 310), the lock bar (135, 335) configured to slide between a retracted position in which the spool (140, 340) is free to rotate within the chassis and an extended position in which the spool (140, 340) cannot rotate, the lock bar (135, 335) being biased to the extended position in which the lock bar (135, 335) extends through the aperture (124, 324), wherein the lock bar (135, 335) is removed from the aperture (124, 324) when disposed in the retracted position, and an adapter arrangement (150, 350) disposed on the spool (140, 340), characterized in that the adapter arrangement (150, 350) is configured to slide relative to the spool (140, 340) between a connection position and a payout position, such that the lock bar (135, 335) is retracted when the adapter arrangement (150, 350) is slid to the payout position, and such that the lock bar (135, 335) is extended into the aperture (124, 324) when the adapter arrangement (150, 350) is slid to the connection position.