A small form-factor pluggable, "SFP", transceiver for being inserted into an electrical connection slot of an electronic apparatus, comprising: a housing having a front end, a rear end opposite the front end, a top surface, a bottom surface opposite the top surface, and an engaging portion disposed on the bottom surface, wherein when the SFP transceiver is inserted into the electrical connection slot, the engaging portion is engaged with the electrical connection slot; two electrical signal connectors disposed on the front end of the housing; and an unlocking assembly including: an unlocking member pivotally connected to the housing and including a manipulating portion, wherein the manipulating portion is exposed at the front end and is arranged adjacent to the top surface, and the manipulating portion is configured to be rotated in a direction away from the front end and the top surface by an external force; and an interlock member movably disposed on the housing, wherein when the manipulating portion is rotated in the direction away from the front end and the top surface, the unlocking member moves the interlock member such that the engaging portion is out of engagement with the electrical connection slot, wherein a part of the interlock member is exposed at the bottom surface, the interlock member includes a slot formed on a side portion thereof, and the unlocking member includes a driving portion engaged with the slot, wherein when the unlocking member is rotated in the direction away from the front end and the top surface, the driving portion presses an inner wall of the slot to move the interlock member relative to the housing such that the engaging portion is out of engagement with the electrical connection slot, wherein the housing includes a pivotal structure arranged in an accommodating space defined by an inner surface thereof, the pivotal structure is located at the front end of the housing, and the unlocking member is pivotally connected to the pivotal structure of the housing, wherein the housing includes a limiting structure configured to limit a rotation angle of the unlocking member with respect to the housing, and wherein the pivotal structure is integrally formed as a one-piece unit with the limiting structure, and wherein when the unlocking member is rotated relative to the housing, the rotation angle of the unlocking member is limited to a range of 15 to 30 degrees by the limiting structure. a housing having a front end, a rear end opposite the front end, a top surface, a bottom surface opposite the top surface, and an engaging portion disposed on the bottom surface, wherein when the SFP transceiver is inserted into the electrical connection slot, the engaging portion is engaged with the electrical connection slot; two electrical signal connectors disposed on the front end of the housing; and an unlocking assembly including: an unlocking member pivotally connected to the housing and including a manipulating portion, wherein the manipulating portion is exposed at the front end and is arranged adjacent to the top surface, and the manipulating portion is configured to be rotated in a direction away from the front end and the top surface by an external force; and an interlock member movably disposed on the housing, wherein when the manipulating portion is rotated in the direction away from the front end and the top surface, the unlocking member moves the interlock member such that the engaging portion is out of engagement with the electrical connection slot, an unlocking member pivotally connected to the housing and including a manipulating portion, wherein the manipulating portion is exposed at the front end and is arranged adjacent to the top surface, and the manipulating portion is configured to be rotated in a direction away from the front end and the top surface by an external force; and an interlock member movably disposed on the housing, wherein when the manipulating portion is rotated in the direction away from the front end and the top surface, the unlocking member moves the interlock member such that the engaging portion is out of engagement with the electrical connection slot, wherein a part of the interlock member is exposed at the bottom surface, the interlock member includes a slot formed on a side portion thereof, and the unlocking member includes a driving portion engaged with the slot, wherein when the unlocking member is rotated in the direction away from the front end and the top surface, the driving portion presses an inner wall of the slot to move the interlock member relative to the housing such that the engaging portion is out of engagement with the electrical connection slot, wherein the housing includes a pivotal structure arranged in an accommodating space defined by an inner surface thereof, the pivotal structure is located at the front end of the housing, and the unlocking member is pivotally connected to the pivotal structure of the housing, wherein the housing includes a limiting structure configured to limit a rotation angle of the unlocking member with respect to the housing, and wherein the pivotal structure is integrally formed as a one-piece unit with the limiting structure, and wherein when the unlocking member is rotated relative to the housing, the rotation angle of the unlocking member is limited to a range of 15 to 30 degrees by the limiting structure.